Feature: 1. Bone conduction headphone, no bottom noise, can provide clear call quality even in complex environments. 2. The sound is transmitted directly to the ear through the bone, reducing the damage to the eardrum hearing. 3. The sinking streamline design, the arc fits the ear shape, and the glasses do not affect the wearing. 4. Using Bluetooth 5.0 chip, low power, wireless connection, stable signal transmission. 5. The outer layer is soft silicone, which is easy to recover from distortion, is skin‑friendly and comfortable to wear. How to Use: 1. Long press the power for 3 seconds, turn it on, and enter Bluetooth pairing 2. Turn on the Bluetooth function of the mobile phone, search for V11, connect and pair, then you can use it Specification: Item Type: Earphone Material: Silicone + Titanium Alloy Bluetooth: BT5.0 Charging Voltage: DC-5V Built-In Polymer Lithium Battery: 150mAh Frequency Response Range: 20HZ-20KHZ Charging Type: Type-C Package List: 1 x Earphone 2 x Earplug 1 x Charging Cable 1 x Manual