Stereo hanging neck wireless bluetooth headset magnetic suction with digital display large capacity half in-ear sports headset

Chip Model: Bluetooth V5.2 ZTE Bluetooth 5616B1
Bluetooth protocol: A2DP.AVRCP.SPPP.HFP
Battery capacity: 190MAH Frequency range: 2.4GHZ spectrum
Frequency range: 20HZ-20KHZ
Talk time: Maximum talk time 13 hours 60% volume
Playback time: Maximum playback time 9 hours at 60% volume
Standby time: about 180 days
Communication distance: 10 meters in the open area directly opposite the communication distance
Product features: sports neck magnetic metal bluetooth headset
Instructions for use: single-press volume up and down (+, -), long-press up and down the previous song, the next song, single-press the power-on button (pause / play), long-press the power-on button (power on / off) double-click (power on / off) switch between Chinese and English, triple-click (power on / off) TF card switching