1. BT version: 5.4 chip: JL70062. Battery capacity: 500mAh charging time: 2.5 hours3. Usage time: Music time: 55 hours (45 hours in ANC mode) talk time: 40 hours4. Noise reduction depth: -30dB5. Size: 177*78*200mm weight: 221g1. 30dB hybrid noise reduction technology, arbitrary switching of noise reduction/music sound mode2. Skin-friendly protein skin + high rebound sponge, light and breathable3. Multi-function button, one-button multi-purpose4. Charge for 10 minutes and listen to songs for 7 hours
