This is a like-new item, used only for testing. There is some damage to the box. This will be sent via simple shipping (postage), so please be aware of this. The following is the manufacturer's description: (Precautions for use) ① Depending on the commercially available cable, the standard may not match and charging may not be possible. In that case, please use the included cable. ② Due to the power-saving design, the screen will turn off in about 20 seconds even during operation. ③ To prevent malfunctions, the settings will be automatically reset about 50 seconds after operation in an unlocked state. Please complete all settings within 50 seconds. ④ Due to the material properties, scratches and fine scratches may occur. ⑤ Because it is a precision instrument, please be careful of drops, impacts, and water damage. [Support for breaking free from smartphone addiction!] Locks your smartphone for a certain period of time, supporting improved concentration and improved lifestyle habits. The setting time can be freely adjusted from 1 second to a maximum of 99 hours. Let go of your smartphone and embrace a fulfilling life. [OK to use even in quiet places♪] You can set it to "mute mode" in quiet places such as libraries and study rooms. Lightweight and compact, so it's easy to carry. (Outer diameter: 215 x 95 x 22mm, Inner diameter: 172 x 88 x 17mm, Weight: 195g) [Okay even when you suddenly need your smartphone ◎] Equipped with an unlock function for emergencies. It can be used up to 5 times, so you can rest assured in case of emergency. (If you don't need it, it's also recommended to use it up at the beginning♪)