Specification: 1. Bluetooth specification: V5.3 2. Bluetooth profile: A2DP, AVRCP, HFP; HSP 3. Frequency response: 20Hz~20kHz 4. Working voltage: 3.1V~4.2V 5. Charging voltage: 5V-1A 6. Charging type: Type-C charging port 7. Headphone battery capacity: 35mAh 8. Storage box battery capacity: 350mAh 9. Transmission distance: >10M 10. Playing time: about 4 hours 11. Waterproof grade: IPX5 12. Headphone charging time: 1 hour 13. Charging time of charging box: 1.5 hoursDescribe: 1. Invisible Design and ErgonomicsInvisible earplugs are designed according to the shape of the ear, very mini design style, very lightweight, fit the earhook firmly, suitable for long-term wearing without causing discomfort to the ears. 2. [Designed for sleep] Very mini and invisible earbuds body design, side sleeping does not squeeze the ears, U-shaped rubber skin-friendly ear caps allow the earphones to fit the ears all night 3. Dual Noise Reduction TechnologyExcellent combination of physical noise reduction and acoustic noise reduction technology, you can enjoy a quiet sleep time with the sleep earplugs.Products include 1 * pair of bluetooth earphones 1 * charging case 1 * charging cable 1 * user Manual
