Smart Noise Cancelling Headphones

Model: L2
Bluetooth version: 5.0
Use of wooden boards: 8-15 meters
Headphone battery capacity: 50 mAh + 50 mAh
Headphone charging time: about 30 minutes
Single listening time: about 4 hours
Single ear weight: about 3.9 grams
Charging warehouse capacity: 350 mAh