【Condition】 Only used once after purchase, in overall clean condition, but please be aware of minor dirt and scratches. 【Accessories】 ・Instruction manual ・Charging cable This headset features an "open-ear design" that doesn't block your ears, allowing you to clearly hear surrounding sounds. It provides a similar sensation to bone conduction headphones, making it easier to hear car sounds and traffic signals, thus prioritizing safety. Made with soft silicone material for comfortable use even for extended periods. ✔ Microphone specialized for calls & ENC noise cancellation Equipped with a high-performance microphone to deliver clear audio to the other party. It cuts out surrounding noise, making it ideal for web conferences and business calls. ✔ Up to 11 hours of continuous use & Bluetooth 5.3 support With a large-capacity battery, you can use it for extended periods with peace of mind. Bluetooth 5.3 provides a stable connection with minimal audio delay and interruptions, ensuring a comfortable experience. ✔ Mute function & dual-device connection support You can mute the microphone during calls using the volume buttons, protecting your privacy. It also supports dual-device connection, convenient for those who want to use both a work and a personal smartphone simultaneously.