Blackview Oscal Marine 1 specifications and in-depth review

Blackview Oscal Marine 1

Manufacturer: Blackview

The Blackview Oscal Marine 1 is a water-resistant smartphone built around an IP68-rated enclosure, making it suited for use in wet or demanding environments. Running Android 15, it pairs a 6.56″ IPS LCD screen with a 90Hz refresh rate and branded damage-resistant glass, offering a reasonably fluid visual experience for everyday tasks.

Under the hood, the device runs on the Unisoc T615 chipset, an octa-core processor built on a 12nm process with a total of 8 threads and big.LITTLE architecture, paired with 4GB of DDR4 RAM and 128GB of internal storage expandable via a microSD slot. The 5100 mAh battery supports 10W fast charging and ships with a charger included. Connectivity covers Bluetooth 5.0, NFC, Wi-Fi 5, dual SIM, USB Type-C, and GPS with Galileo support, while the camera system includes a 16MP rear shooter with phase-detection autofocus and an 8MP front camera.

Pros
  • IP68 waterproof rating provides reliable protection against water ingress, making it suitable for use in wet conditions
  • The 5100 mAh battery supports fast charging at 10W and ships with a charger included, reducing out-of-box setup friction
  • NFC support, dual SIM slots, and an external memory card slot add meaningful everyday utility without requiring additional adapters
  • The camera system offers a solid range of manual controls including ISO, exposure, focus, and white balance, giving users more direct control over image capture
  • Android 15 brings a wide set of privacy tools including location controls, clipboard warnings, and camera and microphone access management
  • A 90Hz refresh rate display with branded damage-resistant glass offers smoother scrolling and a degree of screen protection
Cons
  • No 3.5mm headphone jack and no support for high-quality Bluetooth audio codecs such as aptX, LDAC, or their variants limits wired and wireless audio options
  • Single-channel mono speaker output means there is no stereo sound for media playback
  • 5G is not supported, restricting cellular speeds to LTE only
  • The main camera lacks optical image stabilization and does not shoot in raw format, which limits output flexibility in challenging conditions
  • At 304 g, the device is relatively heavy for a non-rugged smartphone, which may affect comfort during extended use
  • Direct OS updates from the vendor are not available, which may affect long-term software support
Who is this for?

This device is well matched for users who frequently find themselves in wet or outdoor environments, given its IP68 waterproof rating that provides dependable protection during exposure to water. The 5100 mAh battery with included fast charging makes it a practical choice for people who need extended daily use without constant access to a power source. Its range of manual camera controls — covering exposure, ISO, focus, and white balance — also appeals to casual photography enthusiasts who want more direct control without requiring professional-grade hardware. Additionally, users who prioritize privacy will find the broad set of Android 15 controls useful, and those who need to stay connected across two networks will benefit from the dual SIM support.

Who is this NOT for?

Users who demand high-performance processing for demanding applications, intensive gaming, or heavy multitasking will find the Unisoc T615 chipset and 4GB of RAM limiting, as the hardware is oriented toward moderate workloads. The absence of a 3.5mm headphone jack, stereo speakers, and any high-fidelity Bluetooth audio codec support makes this a poor fit for users who place significant importance on audio quality. Those looking for strong mobile photography capabilities will be constrained by the lack of optical image stabilization and raw file capture, particularly in low-light or fast-motion scenarios. Finally, users who depend on fast cellular connectivity will be restricted by the absence of 5G support, limiting them to LTE speeds.

Design:

water resistance Waterproof
weight 304 g
thickness 13.5 mm
width 81.5 mm
height 174.7 mm
volume 192.213675 cm³
Ingress Protection (IP) rating IP68
has a rugged build
can be folded

The Blackview Oscal Marine 1 carries an IP68 waterproof rating, meaning it is fully protected against water ingress under sustained submersion conditions. Its physical footprint measures 174.7 mm tall, 81.5 mm wide, and 13.5 mm thick, with a total volume of approximately 192.21 cm³ and a weight of 304 g. The device does not feature a rugged build designation, nor does it support a folding form factor.

Display:

Display type LCD, IPS
screen size 6.56"
pixel density 269 ppi
resolution 720 x 1612 px
refresh rate 90Hz
has branded damage-resistant glass
supports HDR10
supports HDR10+
Always-On Display
supports Dolby Vision
Has a secondary screen
has a touch screen

The display is a 6.56″ IPS LCD touchscreen with a resolution of 720 x 1612 px and a pixel density of 269 ppi, paired with a 90Hz refresh rate for smoother on-screen motion. It is covered by branded damage-resistant glass, adding a layer of protection against everyday scratches and impacts. The screen does not support HDR10, HDR10+, or Dolby Vision, and there is no Always-On Display mode or secondary screen present.

Performance:

internal storage 128GB
RAM 4GB
AnTuTu benchmark score 355767
Chipset (SoC) name Unisoc T615
GPU name Mali G57
CPU speed 2 x 1.8 & 6 x 1.6 GHz
Geekbench 6 result (multi) 1461
Geekbench 6 result (single) 437
Geekbench 5 result (multi) 1350
Geekbench 5 result (single) 357
GPU clock speed 850 MHz
Has integrated LTE
RAM speed 1866 MHz
semiconductor size 12 nm
Supports 64-bit
Has integrated graphics
OpenGL version 3.2
OpenGL ES version 3.2
Uses big.LITTLE technology
CPU threads 8 threads
Has TrustZone
OpenCL version 2
eMMC version 5.1
maximum memory amount 12GB
uses multithreading
GPU execution units 2
Thermal Design Power (TDP) 10W
DDR memory version 4
shading units 64
L3 cache 1 MB

The device is powered by the Unisoc T615 chipset, built on a 12nm process with an octa-core CPU configuration running two cores at 1.8 GHz and six at 1.6 GHz across 8 threads, supported by big.LITTLE technology and a 10W TDP. It is paired with 4GB of DDR4 RAM clocked at 1866 MHz, 128GB of eMMC 5.1 internal storage, and supports a maximum memory configuration of 12GB. Graphics are handled by the Mali G57 GPU with 2 execution units, 64 shading units, and a clock speed of 850 MHz, with integrated graphics support and compatibility with OpenGL 3.2, OpenGL ES 3.2, and OpenCL 2. The chipset also integrates LTE, supports 64-bit processing, multithreading, and ARM TrustZone security, while benchmark results include an AnTuTu score of 355,767, a Geekbench 6 multi-core score of 1,461, and a single-core score of 437, with 1MB of L3 cache rounding out the processor configuration.

Cameras:

megapixels (main camera) 16 MP
Has a dual-lens (or multi-lens) main camera
megapixels (front camera) 8MP
has built-in optical image stabilization
video recording (main camera) 1080 x 30 fps
Has a dual-tone LED flash
number of flash LEDs 1
has a BSI sensor
has a CMOS sensor
has continuous autofocus when recording movies
Has phase-detection autofocus for photos
supports slow-motion video recording
has a built-in HDR mode
has manual exposure
has a flash
optical zoom 0x
has manual ISO
has a serial shot mode
has manual focus
has a front camera
Has laser autofocus
Shoots 360° panorama
has manual white balance
shoots raw
has touch autofocus
has manual shutter speed
can create panoramas in-camera
Has a front-facing LED flash
has a dual-lens (or multi-lens) front camera
supports HDR10 recording
supports Dolby Vision recording
has a front-facing camera under the display
Has a RGB LED flash
has 3D photo/video recording capabilities

The main camera offers a 16MP single-lens CMOS sensor capable of recording video at 1080p and 30fps, with support for slow-motion recording, continuous autofocus during video, and phase-detection autofocus for stills. Manual controls include exposure, ISO, focus, and white balance, while additional shooting modes cover HDR, burst mode, touch autofocus, and in-camera panoramas. The rear camera is backed by a single LED flash, though optical image stabilization, laser autofocus, a BSI sensor, dual-tone flash, and raw capture are not available, and optical zoom is absent. On the front, an 8MP camera handles selfies without a dedicated flash, dual-lens setup, or under-display placement. Neither HDR10 recording nor Dolby Vision recording is supported, and 3D or 360-degree capture is not featured on either camera.

Operating system:

Android version Android 15
has clipboard warnings
has location privacy options
has camera/microphone privacy options
has Mail Privacy Protection
has theme customization
can block app tracking
blocks cross-site tracking
has on-device machine learning
has notification permissions
has media picker
Can play games while they download
has dark mode
has Wi-Fi password sharing
has battery health check
has an extra dim mode
has focus modes
has dynamic theming
can offload apps
Has customizable notifications
has Live Text
has full-page screenshots
supports split screen
gets direct OS updates
has PiP
Can be used as a PC
Has sharing intents
has a child lock
Supports widgets
Is free and open source
Has offline voice recognition
has voice commands
Tracks the current position of a mobile device
is a multi-user system
has Quick Start

The device runs Android 15 and includes a broad set of privacy controls, covering clipboard warnings, location privacy options, and camera and microphone access management, though Mail Privacy Protection and cross-site tracking blocking are not present. Customization options span theme customization, dynamic theming, dark mode, an extra dim mode, widgets, and customizable notifications, while focus modes and Quick Start are not supported. Productivity features include split-screen multitasking, Picture-in-Picture, full-page screenshots, a media picker, sharing intents, app offloading, and the ability to play games while they download. The OS also supports on-device machine learning, offline voice recognition, voice commands, Live Text, device tracking, a child lock, multi-user access, and battery health monitoring. Direct OS updates from the vendor are not available, and the device cannot function as a PC replacement. Wi-Fi password sharing is likewise absent.

Battery:

battery power 5100 mAh
has wireless charging
Supports fast charging
charging speed 10W
comes with a charger
has a removable battery
has a battery level indicator
has a rechargeable battery

The Blackview Oscal Marine 1 is equipped with a 5100 mAh rechargeable battery that supports 10W fast charging, and a charger is included in the box. A battery level indicator is present for monitoring charge status. The battery is not removable, and wireless charging is not supported.

Audio:

has a socket for a 3.5 mm audio jack
has stereo speakers
has aptX
has LDAC
has aptX HD
has aptX Adaptive
has aptX Lossless
Has a radio

The audio configuration of this device is notably limited — it does not include a 3.5mm headphone jack or stereo speakers, and there is no built-in radio. On the wireless audio side, none of the high-quality Bluetooth codec options are supported, with aptX, aptX HD, aptX Adaptive, aptX Lossless, and LDAC all absent.

Connectivity & Features:

has 5G support
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
SIM cards 2 SIM
Bluetooth version 5
has an external memory slot
Has USB Type-C
has NFC
download speed 300 MBits/s
upload speed 150 MBits/s
Has a fingerprint scanner
has emergency SOS via satellite
has crash detection
is DLNA-certified
has a gyroscope
supports ANT+
Has a heart rate monitor
has GPS
has a compass
supports Wi-Fi
Has an infrared sensor
has an accelerometer
has a cellular module
Has a barometer
has an HDMI output
Uses 3D facial recognition
Has an iris scanner
Stylus included
supports Galileo
Has motion tracking
Has optical tracking
Has a built-in projector

Wireless connectivity covers Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), Bluetooth 5.0, and NFC, while cellular support is present across two SIM card slots with download speeds of up to 300 Mbit/s and upload speeds of up to 150 Mbit/s, though 5G is not supported. The device connects via USB Type-C and includes an external memory slot for storage expansion, but lacks HDMI output and is not DLNA-certified. Location capabilities include GPS with Galileo support, complemented by a compass, gyroscope, and accelerometer, while a barometer, infrared sensor, heart rate monitor, ANT+ support, and motion or optical tracking are all absent. Security is handled by a fingerprint scanner, with 3D facial recognition and an iris scanner not featured. Emergency SOS via satellite, crash detection, a built-in projector, and a stylus are likewise not included.

Miscellaneous:

has a video light
Has sapphire glass display
Has a curved display
Has an e-paper display

The device includes a video light, which can be used to illuminate subjects during video recording. The display is flat rather than curved, and neither sapphire glass nor an e-paper panel is used for the screen.

Final Verdict

The Blackview Oscal Marine 1 is a straightforward Android 15 smartphone built around a clear set of priorities: water resistance, battery endurance, and broad everyday connectivity. Its IP68 waterproof rating combined with a 5100 mAh battery and dual SIM support make it a dependable daily device for users who work or spend time in environments where exposure to water is a realistic concern. The camera's manual control set adds a degree of flexibility that goes beyond purely basic shooting, and the privacy toolkit in Android 15 is a genuine strong point. However, the modest chipset, limited audio hardware, and absence of 5G place clear boundaries on what this device can deliver, making it best suited to light-to-moderate workloads rather than demanding use cases. Overall, the Oscal Marine 1 is a focused and functional device that delivers where its specifications are strongest, provided the user's expectations align with its hardware profile.