Headphones Connector Type: Micro USB Brand: Bigmax ・Please check the actual product photos for the condition. ・Used a few times, but the three sizes (S, M, L) of replacement ear tips have not been used. The following is the description from the website: 【50+ Hours of Ultra-Long Continuous Operation & Luxurious LED Battery Level Display】 By incorporating independently developed innovative power-saving technology and a high-performance battery, the earphones achieve over 10-15 hours of continuous playback on a single charge. With the included 500mAh charging and storage case, you can enjoy up to 50 hours of playback in total, allowing you to use them all day without worry. You can easily check the battery level of the charging case at a glance. The latest industry chip is used, so the remaining battery level is clearly displayed on the LED screen in numbers from 1% to 100%. 【Bluetooth 5.3 Technology: Stable Connection & Instant Pairing】 Equipped with the latest Bluetooth 5.3 + EDR chip, the battery life and connection stability are improved compared to commercially available Bluetooth 5.0, achieving stable connection, low power consumption, and low latency, resulting in faster transmission speeds and a wider range! 【On-Ear Operation & Mute Function Included, Siri Functionality】 You can easily operate the earphones, such as play/pause/answer/reject calls/SIRI (voice guidance), without looking at your smartphone while the earphones are still in your ears. Bluetooth headset 【The Ultimate Wireless Masterpiece: Bluetooth 5.3 + EDR】 Single-ear Bluetooth Earphone, Up to 110 hours of standby time, with 500mAh charging case, LED battery level display, ear-hook type headset, microphone included, Bluetooth hands-free calling, compatible with both left and right ears, Type-C fast charging, Siri compatible, CVC8.0, ACC compatible, can connect to 2 devices simultaneously.