No instruction manual Tested and working Weight: 65g Dimensions: 18.5*8cm USB cable length: 160cm + 18cm 4-level temperature settings: 35℃, 40℃, 45℃, 50℃ 4-level time settings: 10min, 15min, 20min, 30min A USB-powered electric heated eye mask that can be used immediately as long as you have a USB port. With a timer that automatically turns off in 10 or 30 minutes, you can adjust the time and temperature to your liking, and use it with peace of mind while sleeping. The cover can be removed and hand-washed! It's great that you can keep it clean since it touches your skin directly. This eye mask, which can be used over 1000 times, is a better value than disposable hot eye masks. Hot eye mask USB electric heated steam eye mask eye warmer timer setting reusable tired eyes 4-level temperature adjustment dry eyes good sleep light blocking blood circulation promotion washable gift ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ Although no noticeable stains were found on the product, there may be oversights. Please check the images for stains, dents, and tears. If you are concerned about details or are looking for a perfect product, please refrain from purchasing. ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ * Immediate purchase welcome, silent purchase at midnight OK ◎ * First come, first served for a single item * Bulk purchase welcome * Free shipping! * Please feel free to comment if you have any questions, not just price negotiations ❖ * Please check the profile once, if you don't mind. ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ #OsatoRoomProductList We have a large number of items for sale, including miscellaneous goods, home appliances, smartphone cases, cables, and DIY supplies* ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ Management number: 15-30-(26/235/21/19/165/14/12)