model: BT-DS

　　mini blue-tooth drum speaker

　　driver unit: 31mm, 4 ohms, 2W

　　audio IC: HT6871 class D

　　bluetooth: 3.0 transmission range: 10 meters

　　battery capacitive: 350MAH

　　output 3.7V input 5V 200MA

　　audio input: 20MV - 500MV

　　frequency response: 100 Hz - 20K Hz

　　separation: S/N more than 85 dB

　　distortion: THD less than 10%

　　continuous playback time: 250 - 350 minutes

　　operating temperature: - 10 - 50 degree

　　product size: 36 x 36 mm

　　net weight: 43 grams

　　color options: all colors