Brand new, unopened product. In case of initial defects, please contact the Leader Media Techno Support Center listed on the back of the package for replacement or other support. No discounts are available. These are neckband-type wireless earphones that have significantly improved sound quality, playback time, and stability thanks to Bluetooth 5.1+EDR. With IPx5 water resistance, you can use them with confidence even in sudden rain during running. In addition, the shortest possible cord routing from a position close to the ear ensures comfortable wear, and magnets are installed in the left and right earphones to prevent tangling when not in use. They support hands-free calling and feature noise-isolating canal-type earphones. 【Product Details / Specifications】 Communication Method: Bluetooth ver. 5.1 Built-in Battery: 3.7V / 130mAh Playback Frequency Range: 20Hz～20KHz Charging Time: Approximately 1.5～2 hours Talk/Maximum Playback Time: Approximately 12 hours Communication Range: Approximately 8～30m (※Varies depending on the environment) Impedance: 16±10%Ω Sensitivity: 91dB±3dB Driver Unit: 10mm Waterproof Level: IPx5 Supported Profiles: HFP A2DP AVRCP AVDTP GAP SDP Accessories: Ear tips S & L each 1 set (M size pre-installed), charging cable, instruction manual Brand Name: Lazos Product Model Number: L-BTE-BK JAN Code: 4571414154703 【Precautions for Use】 ● Please use the included charging cable (5V/1A) to charge this product. Malfunctions caused by using other cables are not covered by the warranty. ● Please charge this product before use. ● We do not guarantee connection and operation with all Bluetooth-compatible devices. It may not work depending on your Bluetooth-compatible product or the application you are using. ● Noise may occur due to magnetic fields, static electricity, or radio interference. ● The built-in battery will naturally discharge if not used for a long time. It will also be consumed by repeated charging and discharging. It cannot be replaced. ● We are not responsible for any damage, such as equipment failure or data loss, that occurs during the use of this product.