New, Unused 【High-Quality Sound】This is a motorcycle earphone that uses Bluetooth 5.0. The DSP noise suppression technology makes signal transmission faster and more stable. With high-quality speakers, the sound quality is improved by new technologies such as noise processing and echo prevention. Enjoy wireless 2-channel stereo music while riding with advanced Bluetooth and DSP noise suppression technology. 【10-Second Automatic Phone Answering Function】In automatic answering mode, you can manually hang up the phone within 10 seconds, and it will automatically answer after 10 seconds, making it convenient to listen to music or answer calls. This motorcycle headphone allows you to keep your hands on the handlebars, increasing safety while riding. 【Easy Operation】There are three operation buttons, and by simply pressing the buttons, you can achieve the following functions, making it an easy-to-use and convenient wireless helmet headset. You can skip to the next or previous song, decrease the volume, play/pause, and redial automatically, making it easy and convenient to use. 【Ultra-Long Standby】Built-in 180mAh lithium battery, with low energy consumption, can stand by for about 160 hours with a 1.5-hour charge, and can work continuously for about 8 hours. There is a warning "Power low" when the battery is low. 【Sweat-proof and Dust-proof Function】The ear pads have a sealed design, making it difficult for sweat and dust to enter, and further extending the lifespan.