The Itel S9 Star adopts a true wireless, in-ear design with no cables or neckband, offering a clean and minimal form factor. It carries an IPX5 ingress protection rating, meaning it is water resistant and can handle sweat and light water exposure without issue. The earbuds deliver stereo audio output but do not include wingtips for additional ear stability, and there is no RGB lighting, UV light, or display of any kind on the device.
The Itel S9 Star uses a 10 mm driver unit and covers a frequency range of 20 Hz to 20,000 Hz, spanning the full extent of standard human hearing. It includes passive noise reduction to help limit ambient sound bleeding in, though it does not feature active noise cancellation. The earbuds also lack a neodymium magnet, and there is no support for spatial audio, Dolby Atmos, or Dirac Virtuo audio processing.
The Itel S9 Star houses a 28 mAh rechargeable battery in each earbud, delivering up to 8 hours of playback on a single charge, while the 400 mAh charging case extends total usage to 22 hours. A full charge takes 1.5 hours, and a battery level indicator is on hand to keep track of remaining power. The earbuds do not support wireless charging or solar charging, so they rely solely on a wired connection to recharge.
The Itel S9 Star connects wirelessly via Bluetooth 5.3 and covers a maximum range of 10 meters. It uses USB Type-C for wired charging but does not support fast pairing or NFC-based pairing. On the audio codec side, the earbuds lack support for LDAC, LDHC, AAC, Auracast, Bluetooth LE Audio, and the full range of aptX variants — including aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, and aptX Voice — meaning audio is transmitted over standard Bluetooth without any enhanced codec processing.
The Itel S9 Star supports fast charging and can function as a headset, making it suitable for calls in addition to music listening. Controls are placed directly on the device, and voice prompts are available to guide the user through pairing and other interactions, though there is no in-line control panel. A mute function is on board for added convenience during calls, and a travel bag is included in the box. The earbuds do not offer ambient sound mode, in-ear detection for auto-pausing, a find-device feature, notification reading, a body temperature sensor, or a built-in camera remote shutter.
The Itel S9 Star is equipped with four microphones alongside noise-canceling microphone technology, helping to reduce unwanted background sound during calls and voice interactions.
