K55 headset wireless clip battery display headset Bt5.2 incoming call reminder vibration 140mah 20 hours talk time headset 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. Unique monitoring and retractable line functions Design, more convenient to use. 2. Vibration reminder function for incoming calls. 3. Switch between Chinese and English prompt sounds. 4. Headphone power display. 5. Can connect two mobile phones at the same time. 6. Charging time: less than 20 minutes. 7. 20 hours of talk and music time. Package includes: 1* earphones 1* charging cable 1* user manual