JLC Wireless Bluetooth Noise Cancelling Headphones

•Suitable for listening to audio and calling.
•Charging interface: Micro USB
•Battery: 3.7V/400mAh
•Charging indication: Red LED light
•Standby time: Average 400 hours (Bluetooth function only)
•Working time: Bluetooth function only: 10 hours, Noise cancelling + Bluetooth function: 15 hours
•Charging time: 2-3 hours
•The depth of the noise reduction: 23DB±2
•Speaker sensitivity: 105±3db