Firstsing  Mini Wireless Bluetooth Speakers Net Cloth Waterproof Bluetooth Speaker For Outdoor Sports 

Description:
1) Sensitivity micro bluetooth speaker
2) Support Iphone, ipad and most of Bluetooth audio device
3) Call pick up/hang up function, Call pick up/hang up function,volume can be adjusted.
4) Built in li-ion battery capacity 1200mAh
5) Mini USB power charging port
6) Built in FM radio
7) With voice reminder function.
8）Built-in TF card slot,support TF card reader function
Specification:
bluetooth Version: 3.0
RF range: 10M
Frequency response: 100Hz-20KHz
Playback time: 8-10hours
Charging time: 3 hours
Charging input: DC 5V
Microphone sensitivity: -40dB
THD≤1%
Loud speaker output: 3W