[2-In-1 Mini Bluetooth 4.1 Earbuds] - With Bluetooth 4.1 technology, which enables wireless connections to your smartphones and other Bluetooth devices and gives this Ultra-small wireless earbud unparalleled sound quality. CVC 6.0 digital noise reduction technology intelligently filters ambient noise and enables clearer sound during calls and while listening to music.
[Up to 1000 hours Super Long Standby Time] - Fashionable style, powerful and excellent compatibility. It makes you achieve the wonderful experience of using wireless which is your best choice while in office, driving and outdoor activities. [Continuous talk time up to 4 hours, Listening time up to 3 hours.]
[Can be Used as Emergency Power Bank] - The earbuds feature a unique patented conductive portable charging system. You just need to put it into power bank[500mA], it will automatically charge.
[Creative Lipstick Style Bluetooth Earbuds] - Fashionable, powerful and excellent compatibility. Supports hands-free calls.
[With Built-In Mic] - You can easily take calls when you are in office, driving and doing outdoor activities
Specifications:
Standby Time: Up to 1000 Hours
Continuous Talk Time: Up to 4 Hours
Total Talk Time: Up to 30 Hours
Listening Time: 2-3 Hours
Listen to the song total time about 20 hours.
Power Bank Charging Time: About 2 Hours
Headset Charging Time: 1 Hours
Headset Battery Capacity: 45mAh
Power Bank Battery Capacity: 500mAh
Support Mode: HSP, HFP, A2DP, AVRCP
Chip: UK CSR
Transmission Distance: More than 10m

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 handove