The boAt Stone 350 Pro measures 158 x 94 x 94 mm and weighs 940 g, giving it a moderately substantial physical presence for a portable speaker. It houses a single 50 mm driver unit and carries an IPX5 water resistance rating, meaning it can withstand water splashes without damage. The speaker features RGB lighting and includes a control panel placed directly on the device, while a touchscreen, remote control, and detachable cable are not part of the design. It does not use a neodymium magnet, nor does it come with a travel bag. The unit has a volume of 1396.088 cm³, is not a neckband-style speaker, and comes backed by a 1-year warranty.
The boAt Stone 350 Pro delivers audio through a single driver configuration rated at 1 x 40W output power, making it a mono speaker without stereo separation. It does not include a subwoofer or a passive radiator, and magnetic shielding is absent from the design.
The boAt Stone 350 Pro is powered by an 800 mAh rechargeable battery that provides up to 12 hours of playback on a full charge, which takes approximately 2 hours to complete. A battery level indicator is built in to help track remaining charge, though the battery is not removable and wireless charging is not supported.
The boAt Stone 350 Pro connects wirelessly via Bluetooth 5.3 with a maximum range of 10 m, and also supports wired listening through an AUX input. It includes a USB Type-C port and an external memory slot, adding flexibility for charging and local audio playback. NFC pairing, Wi-Fi, Ethernet, AirPlay, Chromecast, Auracast, and Bluetooth LE Audio are not supported, nor is there a 3.5 mm audio jack socket or a 3.5 mm male connector. On the codec side, aptX, aptX HD, aptX Adaptive, aptX Lossless, aptX Low Latency, AAC, and LDAC are all absent, and the speaker does not include a microphone input or DLNA certification.
The boAt Stone 350 Pro supports wireless operation and can be controlled via a remote smartphone, while voice prompts are included to assist with device interaction. Fast pairing, voice commands, a mute function, a sleep timer, and a built-in radio are not available, and the speaker cannot function as a power bank.
The boAt Stone 350 Pro supports stereo pairing, allowing two compatible units to be paired together for stereo sound playback.