A1 Bluetooth 5.4 Answer Motorcycle Helmet Headset Wireless Motorbike Headphone
High-performance chip, 5.4 Bluetooth version, quick response, not stuck. Bluetooth version: BT5.4. Bluetooth protocols: A2DP, HFP, HSP, AVRCP. Speaker specification: 40mm PEN speaker. Headphones have FM function and strong signal.