1.Drive:15mm
2.Impedance: 32 OHM
3.Bluetooth Version: Bluetooth V4.1+EDR
4.Bluetooth Frequency?2.4Hz
5.Power Grade?Class II
6.Output Power?30mW
7.Bluetooth Distance: 15 metersaccessible
8.FrequencyResponse:20-20000Hz
9.Operating Voltage Range:3.0V-4.2V
10.Microphone Sensibility?-42dB
11.A2DP/AVRCP High Quality Stereo Audio Transmission and Remote Control Protocol
12.Intense Noisy Cancellation Circuit
13.Switch Between Chinese and English(when the phone is not connected to the Bluetooth, press the switch twice to hear the tone switch successfully)
14.Charge for approximately for an hour( Power Indication:red light, full charge; blue light, the red light disappear)
15.Product Size: Length 25mm*Width15mm*Height35mm
16.Product Weight: 6 g
17.Call Duration: About 2-3 Hours
18.Music Duration: About 2-3 Hours
19.Standby Time?About 96 Hours
20.Charging Time: 60 Minutes
21.Battery Capacity: 55MAH
22.Power:DC 5V(Round Hole Interface), USB Port,Cellphone Charger, Car Charger.
23.The Weight of Whole Set: 60g
24.Package Dimension: 9.583.5*13cm
25.Including: Earphones+USB Cable+Manual+Package Box
