Speaker：8mm * 2

Bluetooth Version：V5.0

Transmission Distance：15-20M

Taking Time：4.0-5.0 Hours

Music Time：4.0-5.0Hours                                                                                                                 

Grade of waterproof: IPX7

Battery Capacity：50mAh

Product Dimensions：26*16*21MM

Charger box battery capacity:500mAh

Charger box dimensions:60*45.6*29.6MM