Features: Bone conduction speaker, a DIY sound experience, place it on different surfaces such as plastic storage box, glass, wooden desk can bring you different sound effects. Features advanced BT 5.0 chip that supports BT connection and TWS enabled. Quality sound effect, up to 115db powerful sound volume, full bass and high treble. Built-in 400mAh lithium battery, up to 6 hours of playtime after 1 hour of full charge. Mini and compact size, convenient to carry and perfect decoration. Used as FM radio allows you to listen to music, have phone calls or conference calls, and even enjoy a nice sound experience of your games, videos or movies. Specifications: Material: aluminum alloy Color: black Quantity: 1 pack BT version: BT5.0 Audio format: MP3, AC3, AAC, WAV... Output power: 3W Frequency response: 20-20kHz SNR: 70dB Power supply: 400mAh lithium batteries, Type-c charging DC5V/0.4APackage size: 70*70*50mm/2.76*2.76*1.97in(1 pack)Package weight: 85g/3oz(1 pack)Package list:1*BT speaker1*Lanyard1*Suction cup1*Adhensive1*Type-c charging cable With the concept of customer first, we provide you with 24/7 customer service. No matter where you are or what problems you encounter, we will solve them for you as soon as possible to ensure your shopping experience is worry-free.