Features 1、Bone conduction speaker, a DIY sound experience, place it on different surfaces such as plastics storage box, glass, wooden desk can provide you various sound effects. 2、Features advanced BT 5.0 chip supporting BT connection. 3、Quality sound effect, up to 115db powerful sound volume, full bass and loud treble. 4、Built in 400mAh battery, up to 6 hours playing time after 1 hour fully charged. 5、Compact size, convenient to carry and decoration. 6、Used as FM radio allows you to listen to music, have phone conversations or conference calls, and even enjoy an fine sound experience of your playing games, videos or movies. Specification Specifications: BT version: BT5.0 Audio format: MP3, AC3, AAC, WAV... Output power: 3W Frequency response: 120Hz-16kHz SNR: ≥70dB Power supply: 400mAh batterys, Type c charge DC5V/0.4A Material: aluminum alloy Color: red Qty: 1 pack Package size: 70*70*50mm/2.76*2.76*1.97in Package List 1 * BT speaker 1 * Lanyard 1 * Suction cup 1 * Adhensive 1 * Type c charge cable