Why the headphones does not charge?Please make sure both ends of the USB cable are securely connected. If you use a power outlet, ensure that the power supply is connected securely and the outlet works. If you use a computer, make sure it is connected and the USB port is powered. Turn on the headset and then turn them off. Disconnect and reconnect the USB charging cable.
Summary: M4 Wireless Earphone Waterproof Noise Cancellation Ergonomic Design with Charging Case
Features: Stereo Sound: With a 5D dual channel, it has a high-quality sound, which can provide you a clear sound when calling. Ergonomic Fit: Lightweight, small size and invisible design, it is comfortable to wear for a long time. It is also not easily fall out when you are doing exercise. Good Performance: With Bluetooth 5.0 technology, it has a faster transmission speed, stable signal, and longer transmission range. Noise Cancellation: Adopting CV 6.0 intelligent noise reduction technology, it can effectively eliminate the external noise, bringing you a clear and stable sound experience. Waterproof: With the IPX5 waterproof rating, it can effectively withstand the sweat and water. Long Battery Life: Its music playtime is about 3~4 hours, and standby time is up to 120 hours. Fully Compatible: It supports IOS and Android systems, which can widely compatible with Bluetooth enabled devices.
Specifications: Product model: M4 Color: Black Bluetooth version: 5.0 Wireless distance: 10m (Unobstructed environment) Earphone battery capacity: 2*30mAh Charging case battery capacity: 200mAh Charging time: 2 hours Music time: Approx. 3~4 hours Standby time: Approx. 120 hours
Package Contents: 1 x Pair of Earphones, 3 x Sizes of Ear Tips (S/M/L), 1 x Charging Case, 1 x USB Charging Cable, 1 x User Manual
Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow minor measuring deviation due to manual measurement.