Bluetooth Earphones 5.1 Headphones Stereo Hands0 Noise Canceling Wireless Business Headset With HD Mic For All Smart Phones Feature: BT5.1 technology brings a more stable and faster wireless connection to your device, allowing you to enjoy stable calls and wonderful music. It adopts a soft, flexible and safe fit ear hook design, 270 degree + 360 degree rotation, and the left and right ear angles can be adjusted arbitrarily to ensure unparalleled comfort and stability when moving. Built-in high-definition microphone, ENC intelligent noise reduction, reduce interference during the call, deep noise reduction, so that the call is as clear as an interview. Intelligent CVC8.0 noise reduction: Not affected by noisy environment, enjoy high-definition call effect. The earphone weighs only 13g, which is very light and stress-0 to wear. Unbreakable Hi-Fi sound: Wireless headphones provide powerful, balanced stereo and dynamic range for an incredible listening experience. The LED display shows the power level, and the power level can be checked anytime and anywhere. It comes with a portable storage and charging compartment, which is convenient to carry and has good protection. There are two types of earplugs, flat ear and in-ear earplugs, to meet your different wearing needs. Parameter: Bluetooth version: V5.1+EDR Wireless frequency: 2.4GHZ Transmission distance: 10 meters Battery capacity: 50mAh Charging voltage/current: 5V/1a Play/talk time: about 4 hours Charging time: about 1 hour Standby time: 120 hours Speaker impedance: 8mm 32 Microphone sensitivity: -42dB Working temperature: -10-50 Battery capacity: 500mAh This is a wireless bluetooth headset designed with new technology, with a microphone, so that you can 0 your hands when talking. The appearance is stylish, concise and generous, making you more noticeable and more confident. The headset can be used with the charging compartment, and charging storage is no longer a problem.