JOYROOM Jdots DB3 True Wireless Earbuds Feature: 1. Comfort & Stability:The earbuds have silicone EarWings to ensure they stay securely in your ears 2. 2 Custom Sound Modes: Bass boost + Classic mode 3. 28 Hours Playtime: 8 hours playtime on one charge, 28 hours total Playtime with the charging case 4. IPX5 Waterproof: The earbuds are protected against sweaty workouts, sudden rainstorms, and spilled drinks 5. Easy To Carry: It is small enough to slip in your pocket, or clip on your bag or keys–so you never worry about space 6. AI-Enhanced Clear Calls: An AI algorithm and 2 built-in microphones ensure that your voice is always heard clearly on calls 7. Low latency technology: Sound and picture in sync, 65ms low latency 8. BT 5.4, Auto Reconnection: Stronger signal, less loss and delay，reconnects automatically once opening the charging case Specification: 1. Series name: Jdots Series 2. Product Name: True Wireless Earbuds 3. Model: JR-DB3 4. BT version: V5.4 5. Working frequency: 2402MHz-2480MHz 6. Max output power: 3.62dBm(EIRP) 7. BT range: 10m (barrier-free open environment) 8. Frequency response range: 20Hz-20KHz 9. Music time: About 8 hours (70% volume) 10. Calling time: About 6 hours (70% volume) 11. Eearbud battery capacity: 40mAh 12. Case battery capacity: 380mAh 13. Eearbud charging time: About 1.5 hours 14. Case recharging time: About 1.5 hours 15. Cycle counts: About 3.5 times 16. Case charging port: Type-C 17. Case power input: 5V 1A