M99 Bluetooth Headset V5.2 Version Long Standby Time Hanging Ear In-Ear Large Battery V9 Upgrade Version Business Model

Parameters: (buy two can be used as a pair)

Bluetooth version: V5.2+EDR

Distance: 10 meters

Talk time: about 100 hours

Listening time: about 88 hours

Headphone battery: 350MAH

Wireless frequency: 2.4GHZ

Supported protocols: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3

Transmission distance: 10 meters

Charging voltage/current: 5V/1A

Charging time: about 2 hours

Standby time: 2220 hours

Speaker impedance: φ8MM 32&;

Microphone sensitivity: -42Db

Working temperature: -10-50℃

Package size: 14.3*9*2.5CM

Headphone size: 7.4*6*2.2CM