Neck Hanging Bluetooth Headset Super Long Life Intelligent Voice 5.1 In Ear Features: Shocking audio-visual experience, front-frequency design, reduce vibration troubles, bring a three-dimensional sound field effect like a concert, enjoy unlimited music possibilities. Customized composite diaphragm, upgraded sound cavity with low distortion, a wonderful combination of carbon fiber composite diaphragm + large moving coil acoustic technology, resonating under the action of magnetism and electricity, allowing music to play a greater sound quality in a limited space Side-in-ear design, S, firmly in your ears, integrated design of ear-in, forming a triangular stable support with your ears, even if you run, ride, and exercise vigorously, it still sticks to your ears. 1 charge, listening to music for a whole day, high-power polymer battery with low-power-power technology, bringing you all-day protection with second-speed charging and strong battery life Holographic sound field sound Product Description: Describe: Bluetooth version: 5.1 Transmission distance: 10 meters headphone battery core: 130 Listening time: 18 hours Talk time: 10 hours Standby time: 200 hours Charging time: about 1.5 hour Holographic sound field sound Shocking audio-visual experience, front-frequency design, reduce vibration troubles, bring a three-dimensional sound field effect like a concert, enjoy unlimited music possibilities. Customized composite diaphragm, upgraded sound cavity with low distortion, a wonderful combination of carbon fiber composite diaphragm + large moving coil acoustic technology, resonating under the action of magnetism and electricity, allowing music to play a greater sound quality in a limited space Side-in-ear design, S, firmly in your ears, integrated design of ear-in, forming a triangular stable support with your ears, even if you run, ride, and exercise vigorously, it still sticks to your ears. 1 charge, listening to music for a whole day, high-power polymer battery with low-power-power technology, bringing you all-day protection with second-speed charging and strong battery life 1x bluetooth headset