K55 Earphones Wireless Clip Power Display Headphones Bt5.2 Call Remind Vibration 140mah 20 Hours Talk Time Headphones Description: Model: K55 version: V5.2 Transmission distance: 10M Transmission frequency: 2.4GHZ Charging voltage: DC5V Charging time: less than 20 minutes Talk time: about 20 hours Music time: about 20 hours Standby time: about 180 days Battery capacity: 140MAH Body size: 56*25*13mm Support protocol: HANDSET\HANDFREE\A2DP\AVRCP Specifications: 1.The unique listening and retractable cable function design is more convenient. 2.Call vibration reminder function. 3.Chinese English tone switching . 4. Earphone power display. 5. Two mobile phones can be connected at the same time . 6. Charging time : less than 20 minutes . 7.Talk & Music time 20 hours . Package Included: 1* headset 1*Charging cable 1*User Manual