i7s TWS Mini Wireless Bluetooth Earphones Stereo Earbuds sportsearbud With Charging Box Mic air earpods For Xiaomi Phone airpods

I7-to-ear wireless Bluetooth headset (V4.2 Bluetooth chip).

Product Features:
Bluetooth version: version 4.2
Transmission distance: outdoor straight line distance 10-18 meters
Battery capacity: polymer lithium battery 50mah

Charging box battery capacity: 400mah

Listening to music time: 2 hours Up and down music / pause playback
Call time: 2 hours
Standby time: 130 hours
Charging time: 1-2 hours
Working current: 22MA
Standby current: 4uA
-Bluetooth class---Bluetooth level: class2 and class3
-frequency band---band/band: 2.4-2.485GHz
-modulation process---modulation process: GFSK
-max. transmitter power---maximum transmit power: +2DBm
Pairing mode: long press the blue light flashing is the normal pairing mode. After booting, do not release and continue to press for three seconds until the blue light flashes rapidly. At this time, the prompting sound is paring, and then enter the binaural pairing state. After the binaural pairing is successful, the blue light flashes slowly.
Prompt tone: Boot prompt: POWER ON
Shutdown hint: power off
Pairing status prompt: paring
Connection prompt: you device is connect
Disconnected prompt: you device is disconnect
Low battery prompt: battery low
Button function: long press to power on, long press to turn off, click music pause / play / call answer / hang up the phone, double click the next song.
Charging instructions:
Headphone charging indicator: The headphone charging red light is on, and the red light is off when the battery is full.
Charging box charging instructions:
1. When the charging box is charging the earphone: the green LED light on the charging box flashes, and the green LED light goes out after the earphone is full.
2. When charging the charging box: The green LED on the charging box flashes.