Instant purchase without comment is OK. "Ultrasonic Contact Lens Cleaner" You can select the cleaning time. Left button → Power Right button → Cleaning time 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes (3 minutes recommended) Just turn on the power and press the time setting button. It stops automatically. Can be used for about 30 days on a single charge. Charging voltage 5V, power 2W Battery capacity 450Ah 125g USB rechargeable, so it can be used on the go (Type-C cable). Daily care becomes very easy. [Color] Blue Operation confirmed. Imported goods may have crushed boxes during import. Also, there may be small scratches, burrs, etc., and the build quality may be rough. Please understand this before purchasing. If there is a problem with the product, please contact us before evaluation. Please note that we cannot respond after evaluation due to Mercari's regulations. Please read the profile before purchasing. ①