This is a Mytrex vibrating eye mask. I bought it a year ago but never used it, so I'm selling it. It's in excellent condition. Retail price: 12,900 yen Although there are no instructions or box, I'll include a charging cable and a full charge so you can use it right away. The following is quoted from the manufacturer's website: "[Random and rhythmic movement] 16 vibration heads arranged along the orbicularis oculi muscle vibrate in various rhythms. Refreshes the eye area. [Delicate micro-vibrations that resonate deeply] The vibration heads stimulate finely and precisely about 5 times per second. Comfort envelops the eye area. [Reproduces professional tapping techniques] Approaches the area around the eyes that you are concerned about. Gently stimulates and cares for the eye area. Body size: Approximately 185mm x Approximately 75mm x Approximately 35mm"