1. Bluetooth chip and model: 6983D2 2. Bluetooth version: V5.3 3. Earbuds battery capacity: 50mAh 4. Charging box battery capacity: 800mAh 5. Single working time: 3-4H 6. Standby time: 72H 7. Operation mode: 8. level: IPX6 9. Product color: black 10. Certification: CE One Charging CompartmentClear Calls, Immersive Sound: Enhance Your Voice With A High-sensitivity Diaphragm And Dual 10mm Drivers That Reduce Ambient Noise By 80%. These Wireless Headphones Produce Powerful, Dynamic Sound With Rich Detail, Restoring Audio Authenticity And Sound Dynamics. Call Noise Reduction Brings You Clear Calls And Immerses You In The Of Music Ultra-long Battery Life Power Display And Emergency Flashlight: Up To 4-5 Hours Of Music Playback Per Charge, And Up To 100 Hours Of Playback With The Wireless Earphone Charging Case. You Can Also Use The Charging Case As An External Battery For Your Phone. Wireless Earbud Power Display Design Can Clearly See The Power Of Each Earbud And The Charging Box, And The Headset Charging Box Can Be Used For Lighting In The Dark. Bluetooth 5.3 And Automatic Pairing: The Bluetooth 5.3 Chip Provides Faster Pairing, Stable Connection And Signal Transmission (no Obstacle Within 10m). After Turning On The Bluetooth Function, Just Take Out Two Or Any One Of The Earphones, It Can Be Automatically Turned On And Connected. The Powerful Bluetooth 5.3 Chip Perfectly Matches Tablets, Laptops And Smartphones. Sports Water Proof: The True Wireless Earbuds Use A Nano-coating To Against Everyday Splashes, Sweat And Rain. This Is A Good Choice For Vigorous Exercise And All Weather Conditions. It Is The Ideal Companion For Running, Yoga, Fitness, Cycling And More.