L9 Business Bluetooth 4.1 Earphone Wireless Stereo Headset With Micphone Handsfree Calls Headphones For Xiaomi Samsung IPhone specification: Type: ear-hook Communication: Wireless Agent: USB Wireless type: Bluetooth Vocal principle: dynamic Control button: yes Volume control: yes Active noise reduction: no Function: ordinary headphones, mobile phones, sports Plug type: wireless Sensitivity: 123 decibels Frequency response: 20-2000Hz Line length: 1.0 MT Resistance level: 9Ω Waterproof: No Model: L9 Support memory card: no Support APP: No Wireless: yes With microphone: yes Color: black, rose gold, gold, white Model: L9 Call time: about 36 hours Music time: about 32 hours Style: ear hook Connection method: wireless Type: Bluetooth Specifications: 1. Long Battery Life: The headset is designed for long battery life, with a built-in 300mAh high-capacity battery that provides higher density, greater security, and longer charging cycles. 2. Strong Performance: The headset features a built-in Bluetooth 4.1 EDR chip that provides strong performance and low power consumption, resulting in a stronger signal. 3. Noise Reduction: The headset incorporates high-definition CVC noise reduction processing, which effectively filters out noise and makes people's voices clearer during calls. 4. Multiple Color Options: The headset is available in four different colors, providing users with a range of options to choose from, ensuring that there is always a color that fits their needs. 5. Comfortable Design: The headset features a comfortable design that is