Open OWS Conduction Concept For Sports Bluetooth Earphones, Conduction Not The Ear, Digital Display And Control 5.3 Bluetooth Earphones Features: [9D Surround Sound]: Use upgraded speakers to increase depth. Existence and space and presents 9D surround effects such as live scenes. [Lightweight and comfortable]: Follow the ergonomic shape concept. The integrated is suitable for the ears, and it is convenient to wear the earphones and long-term stable and comfortable wearing and carrying. [Automatically turn and automatically pair]: to take out the headset from the storage box. The headset will automatically turn and pair automatically. Easy to use and fast without any [LED display]: LED digital display charging and discharging instructions more intuitively battery life [Extremely long battery life]: Not-ear, no sense of rear hanging, new experience of outdoor sports, stable ear hanging, not easy to fall off I open listening without-ear, 9D stereo sound effect, listening to songs and games for up to 30 hours Product Description: Electrical characteristic specifications 1. Charging input voltage range: 4.8-5.2V . Battery charging saturation voltage: 4.15V 3. Battery charging saturation time: 70Min 4. Low battery prompt voltage: 3.3V 5. Low power shutdown voltage: 3.1V 6. Shutdown current: ≤ 13uA 7. Connect standby current: 0.6mA (approximately pausing music) 8. Call current: 5-7mA 9. Playing current: 5-7mA (different and volume may vary) 10. Talk time: 5.5H (maximum volume) 11. Playback time: 5.5H (maximum volume) 12. Standby time: approximately 65H 13. Bluetooth battery capacity and specifications: 30mAh 14. Bluetooth version: V5.3 Product list: 1x earphone 1x manual 1x charging cable