● Wireless version: 5.3
● Working frequency: 2.402-2.480GHz
● Support Bluetooth protocol: A2DP1.3/AVCTP1.4/AVDTP1.3/AVRCP1.5/HFP1.5/
SPP1.0/SMP/L2CAP 4.2
● Transmission distance: ≥10m
● Response frequency: 20~20000Hz
● Audio signal-to-noise ratio: ≥90dB
● Music time: 5~6 hours (70% volume)
● Charging time: about 2 hours
● Headphone battery capacity: 3.7V, 35mAh
● Charging box capacity: 300mAh