【Ultralight Comfort】Weighing only 6.4g, lighter than two A4 papers, these earbuds offer zero burden on your ears for extended wear. 【Secure Ear Hook Design】The curved ear hook ensures a comfortable fit without in-ear insertion, preventing falls and enhancing safety during sports activities. 【IPX5 Waterproof】Washable and sweat-resistant, these earbuds can withstand up to 10 hours of running in the rain, perfect for intense workouts. 【Enhanced Audio Experience】AI algorithm-designed sound effect with 10% enhanced bass delivers dynamic music for an immersive listening experience. 【Open-Ear Comfort】The non-in-ear design provides superior comfort and safety compared to traditional earphones, promoting ear health. 【ENC Noise Reduction】Featuring Environmental Noise Cancellation for crystal-clear calls in any environment. Specifications: Bluetooth Chip: AB5656C Bluetooth Version: Bluetooth V5.4 Operating Frequency: 2.402GHz - 2.4800GHz Left and Right Earphone Battery Parameters: Lithium battery 1045 40mAh/3.7V Shutdown Current: ≤15uA Talk Current (10086): ≤12mA Connection Standby Current: ≤1.5mA Music Playback Current: ≤8mA Standby Time: About 300 days (when earphones are placed in the charging case) Usage Time: About 6H (at 50% volume) Earphone Charging Voltage: 4.75V - 5.25V Battery Charging Saturation Voltage: 4.2V Low Battery Warning Voltage: 3.4V Shutdown Voltage: 3.2V Earphone Charging Current: 40mA (per earphone) Earphone Charging Time: About 1.5H Earphone Battery Lifespan: > 300 cycles Bluetooth Range: 10M (no obstacles) Waterproof Rating: IPX5 Charging Case Battery Parameters: Lithium battery 503040/600mAh Charging Case Charging Current: ≤400mA Charging Case Charging Time: About 1.5H Charging Case Battery Lifespan: > 300 cycles Charging Case Charge Time for TWS Earphones: About 5 times Earphone + Charging Case Total Endurance: 6H + 6H X 5 (times) = 36H Hall Switch Function: Yes