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Bluetooth Version: V4.1
Chip: UK CSR64110
Total Standby Time: Up to 300 Hours
Earphone Non-stop talking Time: 3 Hours
Earphone Total Talking Time: 12 Hour
Listening Time: 2-3 Hours
Listen to the Song Total Time: About 20 Hours.
Power Bank Charging Time: About 2 Hours
Earphone Charging Time: 1 Hours
Earphone Battery Capacity: 45mA
Power Bank Battery Capacity: 500mA
Power Bank Input Voltage: 5V
Support Mode: HSP,HFP,A2DP,AVRCP
Transmission Frequency: 20Hz-20KHz
Bluetooth Distance: About 10M
Chinese/English Language Switch: Power off the BT headset, when the red light flash, quick press home-key two times, switch success.
How to Pairing? (Dual Headphone)
1. Select any one of the main headphone,the other for the Sub-headphone(Interchangeable)
2. Main headphone press 1-2 seconds, the boot(slow flashing blue light), press 2 times quickly the button to enter the main pair of headphones like. (Red and blue lights flash alternately)
3. Auxiliary headset Press 1-2 seconds.the boot(slow flashing blue light), press the button once assisted ear, primary and secondary headset automatically paired. (Primary headset red and blue lights flash alternately to disappear, with the secondary headset with flashing blue lights)
4. Master headset press 1-4 seconds to enter the mobile phone and headset pairing status. (Red and blue lights flash alternately)
5. Open the phone's Bluetooth find Bluetooth devices, select K2, the main headset becomes slow flashing blue lights, the connection is successful English voice switching: In alternating red and blue lights flashing, fast press button twice to complete the handover.
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Lipstick Wireless Earbuds TeckEpic Bluetooth 4.1 Headphones True Wireless Headset Stereo/Mono Mode Lipstick-Sized In-Ear Earphones[20 Hours Playtime with Portable Charging Case] - B01N49F63N