bluetooth mini speaker
Model: GP-508  

•  Power: 3W max  
•  Signal To Noise Ratio:     >80dB
• Frequency Response: 100Hz-20kHz
• Distortion:        <1.0% 
• Battery Li-ion:     3.7v
• Battery Capacity:  500mAh
• Battery Charging Voltage: 5V 
•  Charger Time:4 hours max 
•  Last Time: 3hours (via bluetooth to play)
•  Last Time: 4hours (via audio cable to play) 
•  Driver Unit: 40mm, 4 Ohm ,3W 
•  Dimension: 132x25x66mm
•  Power Indicator Light:Blue lights
•  Transmission Distance: 10m
•  Work Frequency:2.402-2.480GHz
•  Bluetooth Model: V2.1+EDR 
•  Transmission Power: bluetooth class 2
• Product weight: 100g