Gym bluetooth sports headphone on neck

  Main features: phone, listening to music
Operating Frequency: 2,400 ~ 2,4835 GHz
Receiving Sensitivity: <-83 dBm
Transmitting power: automatically detect dynamic transmit power, maximum 4 dBm

Support A2DP function (stereo music features)
Support AVRCP functions (audio / video remote control function)
Supports HFP function (handsfree)
Support HSP function (Headset Profile)

The following versions support BT4.0
Communication: double C
Channel bandwidth: 1M
Indoor distance calls:> 8m (omni-directional)
Outdoor distance calls:> 10m (omni-directional)
Frequency Response: 20Hz ~ 20KHz
Battery: 3.7V, 200mAh lithium battery
Total operating current: <25mA
Machine Shutdown Standby current: <1.5uA
Total power standby current: <5mA
Speaker maximum drive power: 20mW
Life time: ≥ 6 hrs
Online Standby time: ≥36 hours
Charging current: 100 +/- 15mA
Battery charge and discharge life: ≥500 times
Standby battery life: ≥2 months
Battery standby time: ≥240 hours
When charging mode: MICRO USB Charging
Charging time: 2 hours
When no pairing Bluetooth devices, headphones standby time more than three minutes,

  Number Per Ctn:40pcs/Ctn         N.W:7.0Kg/Ctn                G.W:8.0Kg/Ctn         MEAS:55*37*46CM