1. Driver: 15 mm2. Resistance: 32 Ohm3. Bluetooth Version: Bluetooth v5.0 + EDR4. Bluetooth band use: 2.4 GHz5. Power Level: Class II6. Output Power: 30 MW7. Bluetooth distance: 10m barrier8. Frequency range: 20-20000 Hz9. Operating voltage range: 3.0 V 4.2 V10. Microphone sensitivity: -42 dB11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol12. Powerful noise reduction system (active noise reduction)13. Talk time about 4-5 hours14. Music time about 2-3 hours15. Standby time is about 100 hours. 1. Chip: Jerry Wind (V4.2) 2. Effective distance: 10m 3. Horn: composite film, aluminum ring, 0.5-0.3 MW, frequency range 100 Hz-10 kHz 4. Battery: pure cobalt battery, 55 mAh headset charging box 400 mAh 5. Playing time: 2-3 hours for one ear, 1.5-2 hours for ear 6. Standby time: 40 hours in one ear and 30 hours in the ears. 7. Charging time: 1 hour for headphones, 2 hours for charging the box 8. Color: white 10. One parcel size 10 * 10 * 3.5 cm one weight 120 Brand No Brand SKU 100954094_NP-1021486789