Model:ML-BH28

Chipset:AB1532
Version:V5.0+EDR+Dual mode
Profiles:A2DP/HFP/HSP/AVRCP/SPP
Transmit Power:Class2(Max Transmitter output power up to 8dBm)
Frequency Range:2.402～2.480GHz
Signal Noise Rotio:≧90dB
Transmission Distance:>10M
Battery:50mAh/3.7V(rechargeable lithium battery)
Input:DC5V
Talking Time:Around 5 hours
Music Time:Around 4 hours
Standby Time:Around 130 hours
Charging Time:About 1.5 hours
Dimension:21.50mm X 26.4mm X 21.9mm

Charging case specification
Headset Battery: 50mAh / 3.7V *2
Talking Time:Around 30 hours
Music   Time:Around 25 hours
(need to be equipped with energy storage box)
energy storage box Battery: 700mAh/3.7V
INPUT:5V/500MA
Size:61.8mm X 62.7mm X 29.1mm