Bone conduction speaker, a DIY sound experience. Place it on different surfaces such as a plastic storage box, glass, or wooden desk to deliver various sound effects. Features an advanced BT 5.0 chip supporting BT connection and True-WS-enabled. Quality sound effect, up to 115db powerful sound volume, full bass and loud treble. Built-in 400mAh lithium battery, up to 6 hours playing time after 1 hour fully charged. Mini and compact size, convenient to carry and perfect decoration