YYK-530-1 Single Ear Bluetooth Earhook Headset Sweatproof Driving Working Sport Wireless Call Music Earphone with Charging Case

• Ergonomic design, comfortable to wear, won't fall off after wearing it for a long time
• The charging case has LED digital display, making you know the power more intuitively
• Long standby and using time, bid farewell to frequent charging
• Upgrade Bluetooth 5.1 technology, fast and stable connection
• Dual mic noise reduction technology, effectively filter external noise, make the call clearer
• 360 degrees rotating design, suit for left and right ear
• Simple buttons operation, support adjust volume and switch the music

Specification:

• Bluetooth version: V5.1
• Bluetooth transmission distance: 10 meters
• Headset battery capacity: 100mAh
• Charging case battery capacity: 500mAh
• Noise Reduction: CVC 8.0
• Working voltage: 3.7V
• Charging voltage: DC5V 
• Charging Time: about 1.5 hours
• Talking time: 10-12 hours
• Music time: 13-15 hours
• Frequency response: 50Hz - 20KHz