This will turn anything hollow into a speaker
Mini portable conduction speaker, the world's smallest and most versatile bone conduction speaker that allows you to, place it on different surfaces such as plastics storage box, glass, wooden desk can provide you various sound effects. Turn anything hollow into a speaker at anytime.
Small but powerful
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. The speaker can be quite powerful reaching up to 115db, and it allows you to customize the tone quality.
The speaker can be used to listen to music and podcasts. It also allows you to have phone conversations, play games or watch movies. There is also an FM radio option which allows you to listen to the radio.