One Plus Bullets Pro Neckband Bluetooth Earphone

Parameter: Product model: A9 Bluetooth version: 5.0 Chip: Lanxun BT8832A Frequency range: 2402MHz ~ 2480MHz Protocol: HFP1.7 HSP1.2, A2DP 1AVRCP 1.6SPP 1.2 PBAP1.0 Working distance: 10m Music playback time: 4-5 hours Talk time: 4-5 hours Specifications: Ergonomic customized design, to ensure a comfortable ear sense. The latest Bluetooth V5.0 technology High capacity batteries are used for a long time Designed for sports, wear solid High-definition microphone support calls Make your life more convenient. Package Included: 1*Pair of Wireless Earbuds (Left & Right) 1*Charging Case 1*Charging Cable 4*Ear cap 1*User Manual