Bluetooth Earphones Are Not In The Ear Wireless Digital Display Sports Outdoor Ear Hook Earphone Sports Features: Using ABS materials and electronic components the wireless headset is reliable and durable. Full of a sense of technology say goodbye to cumbersome pairing pick up the Internet with seconds of power on experience the wireless sound. Powerful composite power diaphragm automatically filter external noise clear calls with bilateral microphones Bluetooth compatible headset adopts Bluetooth compatible chip 5.3 with fast and stable transmission speed and strong -interference ability. Ergonomic design makes it comfortable to wear. Suitable for your home office travel sports and other. Product Description: Headphone parameters Bluetooth solution: Jerry 6983D2 Bluetooth version: V5.3 Wireless frequency: 2.4GHZ Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Transmission distance: 10 meters Battery capacity: 30mAh earphones+250mAh charging compartment earphones Charging voltage/current: 5V/1A Play/talk time: approximately 5 hours Charging time: approximately 2 hours Standby time: 90 days Horn impedance: φ 13mm 32 Ω Mic sensitivity: -42dB Working temperature: -10-50 ℃ Single unit weight: 61.4 grams Single set weight: 100.8 grams Packaging size: 13 * 4.2 * 8cm Product List: Earphone * 1 charging cable * 1 manual * 1