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

Product Features

• 【EXCELLENT STEREO AUDIO QUALITY】With the latest Bluetooth V4.2+EDR technology delivers exceptional high and low performance.
• 【ERGONOMIC DESIGN】Perfect size, perfect fit on ears, built-in high definition microphone and easy switching between call and music, ideal for running, jogging, hiking, cycling, gym, etc.
• 【Sign and Time】Bluetooth signal coverage to 10 meters. The lifespan is up to 100 hours in standby mode and 2 to 3 hours with music or continuous conversation.
• 【For all Bluetooth devices】Bluetooth, Android, IOS or Windows, Tablets, Computers and other Bluetooth enabled devices.
• 【24 Hour Online Service】 because others sell low prices and low quality. We offer 1-Year Manufacturer’s Warranty. If you have any questions on the earphone, we will reply within 24 hours. Serving customers is our job.