Dongguan Chenxun Electronics F22 Wireless Earphone User Guide
F22 Wireless Earphone Specifications Product Model: F22 WirelessVersion: V5.0 Wireless Profile: A2DP/AVRCP/AVDTP/AVCTP/HFP/GAVDP Effective Range: Approx. 10 m(33 feet) Communication Time: Max. 5 hours (A fully-charged battery) Music Playback Time: Max. 5 hours (A fully-charged battery) Transmission Frequency Range: 2.402GHz~2.480GHz Earphone…