Features: Bone conduction speaker offers a DIY sound experience; placing it on different surfaces like plastic storage boxes or wooden desks can provide various sound effects. Equipped with an advanced Bluetooth 5.0 chip, it supports Bluetooth connections and is TWS-enabled. Delivers quality sound effects with powerful sound volume up to 115dB, providing rich bass and clear treble. Includes a built-in 400mAh lithium battery, allowing up to 6 hours of playtime after only 1 hour of charging. Compact and mini size, making it easy to carry and an ideal decoration. Functions as an FM radio, enabling music playback, phone conversations, conference calls, and a fine sound experience while gaming, watching videos, or movies. Specifications: Material: aluminum alloy Color: black Qty: 1 pack Bluetooth version: BT5.0 Audio format: MP3, AC3, AAC, WAV... Output power: 3W Frequency response: 20-20kHz SNR: 70dB Power supply: 400mAh lithium battery, Type-C charge DC5V/0.4A Package size: 70*70*50mm/2.76*2.76*1.97in (1 pack) Package weight: 85g/3oz (1 pack) Packing List: 1*Bluetooth speaker 1*Lanyard 1*Suction Cup 1*Adhesive 1*Type-C charge cable 3*Magnetic Fixing Piece