Bluetooth headphone - DS-BL018

Feature:
1.Hi-Fi stereo sound quality
2.Built-in waterproof microphone
3.Incoming call reminding function
4.Free swich between music and phone
5.Low power consumption
6.Directly charge batteries
7.Compatible with all Bluetooth A2DP protocol enabled devices
8.Talking time: 3 hours, Standby time: 48 hours
Acoustic Specifications:
1.frequency response: 20-20KHz
2.Impedance: Headset: 32 Ohms
3.Sensitivity (S.P.L): 110dB±3dB (at 1KHz)
4.Rated Power: 100mW
5.Driver Diameter: Φ40mm
Bluetooth Specifications:
1.Bluetooth Version: V1.2
2.Radio Performance: Class II
3.Frequency Range: 2.4GHz~2.48GHz
4.Channel: 79
5.Data Transfer Speed: 723Kb/s
6.128bit encryption
7.Operating Distance: 10 meters
8.Power Source: DC 3V (2x1.5V AAA batteries)