Product Description Material: flannel Size: 19.5*10.5 cm Control: four-speed constant temperature Heating temperature: 35-50 degrees Celsius (20 degrees Celsius at room temperature) Voltage: 5V Power supply: USB plug-in Color: purple, gray Quantity: 1 piece Package content: 1 piece * Steam eye mask (battery not included) 1. PURE RELAXATION - Due to its size, the mask is ideal for relaxation, stress reduction and headache relief. It can also be used as a sleeping mask. For an additional feel-good factor, a pleasant scent can be added using an insert pad. To intensify the aromatherapy experience, the mask can be used with a low level of moisture. 2. COMFORTABLE - Easily adjustable with an elastic band, comfortable to wear and blocks light effectively. The curved shape adapts to different face shapes and does not cause pressure points. 3. INDIVIDUALLY ADJUSTABLE - Adjustable in 4 heat levels from 35 to 50°C and 4 time intervals. Automatically turns off when the time is up. 4. FLEXIBLE USE - The eye mask can be used conveniently on the go with a USB adapter on a PC / laptop, power bank, in the car, or other USB connections. You can carry it easily with the included carrying case. It's also more economical than disposable, single-use vaporizing eye masks. 5. SOFT & SAFE - The inside of the eye mask is made of soft and fluffy materials, providing a gentle touch for your eyes. Unlike conventional microwave eye masks, this eye mask has been thoroughly tested during development to prevent overheating and ensure safety.