The smallest speaker in the world, can be hung on the mobile phone;

Rubber wood material can be worked under 0-40 centidegree.

After 2 hours charging, it can play 5 hours continuously.

Material: Rubber wood

Speaker system: 8ohms 1W

Power supply: rechargeable lithium batteries

Unit size: 2.0 x 2.5  x 3.0 cm