Bluetooth version: 5.0
chipset: jl6936d4
protocol: hfp/a2dp/avctp/avrcp
working frequency of bluetooth: 2402mhz-2480mhz
transmission distance: 10m battery
audio.
driver unit: 40mm
sensitivity: 122d±3db
impedance: 32ω±15%
frequency response range: 20-20khz
power.
standby time: 25 hours
talk time: 13 hours
play time: 12 hours
charging time: 1 h
input voltage: dc/5v/300mah
working temperature: -40°c/+85°c
capacity: 250mah