Casque TWS sans fil Bluetooth, casque de sport stéréo 9D étanche avec microphone, nouvelle mise à jour F9, 2022

2022 Newly updated F9 Bluetooth Headset TWS Wireless Headset 9D Stereo Sports Headset with waterproof microphone Headphone specifications 1: Product name: F9 2: Wireless version: V5.1 3: Protocol: Supports HFP 1.7. HSP 1.2 AVRCP 1.6 SPP 1.2 and PBAP 1.0 4: Speaker diameter: 8mm 5: Working distance: 10m-20m 6: Talk time: 5-6 hours (1 full load) 7: Music playback time: 5-6h (1 full load) 8: Waiting time: 650 hours (with charger set) 9: Frequency: 2402MHz~2480MHz 10: Battery type: 3.7V, 50mA lithium battery 11: Charging time: 1-2h 12: Working temperature: - 10-55 13: Charger housing specification: Input current: 5V = 1A @Output current: 5V=1A Battery type: 3.7 V @Charging time: 1-2h Graphite Crucible: Mini Gold Furnace Torch for Metal Melting 2 * earphone 1 * cargo hold 3 pairs of earplugs of different sizes 1 * Original charging cable 1 * Product Manual How to use headphones: 1: Ensure that the charging box has power. If Power failure in the cargo hold, fully loading the cargo hold; (Pick up both headphones and place them The posterior portion of the sheath. Cargo compartment indicator light Until it indicates that there is energy. If it doesn't light, it means Without power) 2: Remove two earphones from the charging box and use them. In the left and right ears, respectively. Ordinary earphones Automatic opening and pairing; (Voice command: power supply Open, left channel, right channel, waiting for connection). 3: Open the Bluetooth of the phone and click on the connection pair. "Name F9" to connect (voice warning "Connected"). ". Notes: If you receive only one headset that can be used for the first time, you can do as I said, delete the Bluetooth name on the phone, remove all headphones from the charging box, and then pair them again.