1. Integrate super-sensing original sound dual units, digital frequency division technology, and Devialet tuning to restore sound details 2. Support L2HC and LDAC dual HD audio decoding, realize HarmonyOS and Android dual ecological HD audio transmission, the rate can reach 960-990kbps 3. Bone voiceprint pickup microphone, active noise reduction, improve call quality 4. Support rich gesture touch control functions 5. Support simultaneous connection with two devices, free switching 6. IP54 waterproof and sweatproof 7. Right earphone heart rate monitoring, left earphone temperature monitoring Product parameters: 1. Frequency range: 14Hz-48KHz 2. Battery capacity: Charging box: 580mAh Headphone: 55mAh 3. Talk time (only earphones/with charging box): - noise reduction on: 3.1 hours/14.4 hours - noise reduction off: 4.3 hours/19 hours 4. Music playback time (only earphones/with charging box): - noise reduction on: 3.7 hours/17 hours - noise reduction off: 5.8 hours/27 hours 5. Charging time: - 40 minutes (headphones) - 60 minutes (charging box) - 120 minutes (wireless charging for charging box) 6. Charging port: Type-C 7. Charging box size: 47.5mm x 67.9mm x 24.5mm 8. Weight: single earphone: about 6.1g charging box: about 52g 9. Packing list: - Earphone x 1 pair - Charging box x 1 - Earplugs x 3 pairs - USB-C charging cable x 1 - User Manual x 1Specification: Package Weight One Package Weight 0.21kgs / 0.47lb One Package Size 12cm * 12cm * 8cm / 4.72inch * 4.72inch * 3.15inch Qty per Carton 60 Carton Weight 13.00kgs / 28.66lb Carton Size 50cm * 38cm * 40cm / 19.69inch * 14.96inch * 15.75inch Loading Container 20GP: 350 cartons * 60 pcs = 21000 pcs40HQ: 814 cartons * 60 pcs = 48840 pcs