MOSTOP Sleep Headphones Velvet Music Eye Mask Wireless Bluetooth Headsets for Sleeping-Relaxation-Air Travel-Meditation-Insomnia -Gray-

Specifications: Bluetooth protocol: Bluetooth 4.1+EDR including ESCO and AFH Power standard: Class 2 The communication distance: 10M Bandwidth: 2.4GHZ (2.402-2.483.5MHZ) Emission sensitivity: about 4dBm The receiver sensitivity: -92dBm Horn parameters: 30mm 32 euro 0.25W*2 MIC distance: about 1m The signal-to-noise ratio of SNR: 98dB LED indicator: power/to code/charge Continuous play time: 5--6 hours Working current: 10--25mA Charging time: about 2 hours (please full charge before first use). Range of working temperature: -10-50 degrees Operating humidity range: 10-90% Operation Guide: Press the on/off button till the LED light blink 5s, turn from blue to red. Open the Bluetooth in phone and match with the device "Sound Sleep" After match successfully open the music in your phone, then you can enjoy the music with the eye mask, press the on/off button can pause it Press the on/off button, you can answer the phone. press again for hang up. Long press the Forward button for volume +, long press the Back button for volume . Press on/off button 2-3 seconds can back to dial the telephone When charging the red light on, while charging is complete, the red light will off.