I'm selling these because I don't use them as much anymore. I hope someone who will use them can take them. Thank you. [Model]: SF2 [Specifications]: Neckband type [Color]: Black [Operation check]: Completed [Accessories]: USB charging [Communication method]: Bluetooth Ver. 4.0 [Playback time]: 8 hours [Wireless range]: Approximately 10 meters [Weight]: Approximately 30g SOL REPUBLIC, which has relationships with many top DJs and artists such as Steve Aoki and Calvin Harris, and is attracting attention worldwide. A new type of wireless earphones has appeared from this up-and-coming American headphone brand. With a beautiful, streamlined design, it is lightweight and has high specifications. SHADOW, which matches various scenes such as casual, business, and sports, is a wireless earphone unlike any other. It reproduces rich bass and detailed high frequencies in a balanced manner from its compact design. It matches various genres of music and delivers high-quality sound equivalent to wired earphones wirelessly. Three remote buttons allow you to make calls, adjust the volume, and skip songs on your smartphone. The silicone body repels water and is durable, making scratches less noticeable. Canal type that fits in the ear and is hard to fall out. The playback time is an amazing 8 hours thanks to the power-saving Bluetooth Ver. 4.0. The wireless usage range is up to about 10M, and the weight is only 30g. It also supports multi-point connection, allowing you to pair with two devices simultaneously. You can seamlessly switch between two devices to play music and make calls.