This is a Nicoja oral irrigator. It is new and unused, but does not have the instruction manual or warranty. You can find instructions for use by searching for "Denkai Mizukuchi Nai Senjoki Sukkiri Jet" (Electrolyzed Water Mouth Washer Sukkiri Jet). I purchased this as a new, unused item without an instruction manual from a recycling shop. After checking the contents, I found no signs of use, so I am listing it as a new, unused item. I have only confirmed that it powers on. ★Please feel free to comment if you are interested★ I am open to price negotiations. Retail price: 28,880 yen __________ Rated voltage: AC100V 50/60Hz Rated power consumption: 15W Tank capacity: Approximately 600ml Size: Approximately height 194 x width 196 x depth 86mm (excluding nozzle) Hose length: Approximately 100cm Weight: Approximately 980g (excluding nozzle) Electrolysis method: Non-membrane electrolysis Electrolysis time: Approximately 50 seconds Country of manufacture: Made in Japan