Stereo Magnetic Neckband Bluetooth With Digital Display Capacity Semi-In-Ear Sports Earphones Large Stock Available

Chip model: Bluetooth V5.2 Zhongke Lanxun 5616B1 Bluetooth protocol: A2DP.AVRCP.SPPP.HFP Battery capacity: 250MAH Frequency range: 2.4GHZ spectrum Frequency response range: 20HZ-20KHZ Call time: Maximum call time 20-30 hours at 60% volume Playback time: 60% volume maximum playback time 20-30 hours Standby time: about 180 days Communication distance: 10m meters in an open area facing each other Product Features: Sports Neckband Magnetic Metal Bluetooth Earphones Product color: black, green, blue, pink Sound Channel: True Stereo Instructions for use: Single press volume up/down +, -, long press to skip to previous/next song, single press power button to pause/play/answer/hang up, long press power button to turn on/off, double-click to switch Chinese/English, triple-click to switch TF card