DESCRIPTION : Bluetooth version: Bluetooth4.2 Transmission distance: 10M, Frequency response: 2.402GHZ ~ 2.480GHZ Output sensitivity: -6 ~ +4dBm Microphone sensitivity: -42DB Battery capacity: 80mah Resistance: 32Ω Rated power: 3mw Drive unit: φ10mm Line length: 25mm Play time: 4H Standby time: 70h Charging time: 1.5h Support function HFP /HSP Music time: 4 hours Talk time: 4 hours Boot standby time: 80 hours Charging time: 1.5 hours Weight: 7.3G Headphone size: 25*29.5*54mm Material: ABS metal paint characteristic: 1. Ultra-thin body 2. Youth fashion color 3. Lightweight 4. Can connect 2 mobile phones at the same time 5. Metal brushed texture 6. HD call 7. Silicone ear hooks are used with earplugs for both firmness and comfort. 8. Intelligent shutdown (the headset automatically shuts down 5 minutes after disconnection) 9. The phone displays real-time power