--Anti-lost vibration: When the mobile phone is beyond the connection range of 10 meters, the headset will vibrate to remind to prevent the mobile phone from being lost

--One key to automatically retract the headphone cable without tangling

--5 hours of continuous talk, the headset does not heat up, the ear is not easy to hurt

--Compatible with most phones with Bluetooth-compatible

--When there is an incoming call, the earphone motor vibrates to remind,won't miss important calls

Features:
--5 hours of continuous talk, the headset does not heat up, the ear is not easy to hurt, and it is a good helper when talking on the phone;
--Support to connect two mobile phones at the same time, work mobile phone & private mobile phone are correct;
--Special silicone ear caps, suitable for talking on the phone for a long time, no pain to wear for a long time;
--High-definition call, intelligent noise reduction technology is specially designed for busy people (office, driver, takeaway brother, etc.);
--Anti-lost vibration: When the mobile phone is beyond the connection range of 10 meters, the headset will vibrate to remind to prevent the mobile phone from being lost;
--When there is an incoming call, the earphone motor vibrates to remind, won't miss important calls.

Description:
Name: F920 Wireless Sports Earphone
Item model number: F920
Bluetooth-compatible Mode: Stereo
Bluetooth-compatible version: V4.0
Chip: CSR8615B04
Wireless frequency: 2.4GHz-2.48GHz
Transmission power: Class 2
Charging voltage: 5V
Working voltage: 3.7V
Battery specification: rechargeable polymer lithium battery (601515/80MAH)
Speaker impedance: 16±15%Ω
Sensitivity: 95+/-3DB
Frequency range: 50-20KHZ
Transmission distance: 10m
Speaker size: 10x4mm
Microphone size: 4x1.5mm
Microphone sensitivity: 42+/-3db
Charging time: about 2H
Listening time: about 4H
Talk time: about 5H
Standby time: about 80H
- Battery charging: (the battery must be fully charged before use)
1. Connect the charger cable to the charging jack on the headset.
2. Plug the charger into the power outlet.
3. The indicator lights up in red when charging, and the red light goes out when fully charged.
4. Detach the charger from the headset and the power outlet.
5. Or slide the headset into the charging base, the indicator light will turn red, and the red light will turn off when fully charged.
6. Remove the headset from the charging cradle.
- Switch machine: ON/OFF
1. Power on: Press and hold the start/end call key for about 5 seconds until it flashes blue. At the same time, the headset prompts that the Bluetooth-compatible is turned on.
2. Power off: Press and hold the start/end call key for about 6 seconds until it flashes red. At the same time, the headset prompts that the Bluetooth-compatible is turned off.

Packing list: 
1 x headphone
1 x charging wire
1 x instructions

Note:
Due to manual measurement, please allow 1-3 cm error, thank you
Due to screen and other objective reasons, there may be a certain color difference, please understand.