Features 1. Small Size & Comfortable Fit（Small ear design，Fit snugly in your ears）； 2.PU Composite Diaphragm Acoustic Technology（High Fidelity Sound, more equalized frequencies） 3. Smart HD Digital Display（Displays the battery level of earbuds and charging case in real-time） 4. 42Hrs Playtime and Rapid charging (7 hours of Playtime on one charge, 35 hours total listening time with the charging case, 10-minute charging offers 1 hour of listening time) 5. BT 5.3，instant connection（low consumption chip, faster and more stable connection） 6. DNS call enhancement（precise sound pickup, environmental noise cancellation, lets your friend hear you more clearly） 7. Low-latency technology（sound & picture in sync, 65ms low latency） 8. Aesthetic design（ breathing circle indicator, aesthetically pleasing） 9. Wide compatibility（widely compatible with Android, iOS, Windows systems） Parameters Series name: Jdots Series Product name： True Wireless Earbuds Model： JR-DB2 Pairing name： Joyroom Jdots DB2 Type: in-ear Color: creamy white、 black、purple Bluetooth chip： JL-AD6973D4 BT version: V5.3 BT audio decoding: AAC, SBC Supported protocols: HSP, HFP, A2DP, AVRCP Working frequency: 2402-2480KHz Earbuds battery capacity：35mAh Case battery capacity：500mAh Speaker impedance：16Ω Rated power：2*3mW Speaker：Φ6mm Music time：7h（70% volume） Total playtime：42h（70% volume） Calling time：5h（70% volume） Earbuds standby time (connected): about 48h Earbuds charging input：5V⎓200mA Case charging input：5V⎓1A Charging input port： Type-C Cycle counts:：about 5 times Earbuds charging time:  about 1.5H Case charging time：about 1.5H Water resistance： IP54 Material： ABS+PC Earphone weight：3g Net weight：36g