size：4.2*4.2cm
Features:
1. The product is small and cute, can be placed in the palm of your hand, and can be loudly replaced, which can replace the bulky desktop speaker.
2. The sound is loud and the bass is good. It solves the problem of low sound and poor sound quality of the mobile phone itself.
3. Long playing time, if watching movies or listening to radio, it can reach 5 hours.
4. Long battery life, built-in advanced polymer battery, rechargeable, reusable.
5. Applicable equipment: mobile phones, notebooks, desktop computers, MP3, MP4, game consoles 
