Waterdrop alkaline ion water purifier, made in the USA, is a countertop, faucet-mounted type, certified by NSF/ANSI 42 & 372. This popular model is out of stock on Amazon and was personally imported from eBay for over 20,000 yen including shipping. It was opened to check the operation and water was passed through it once, but it was then dried and stored, so it is almost unused. I am selling it because I no longer have the opportunity to use it. It is the same faucet-mounted type as the Multipure Aquadome, so installation is easy, and water that has passed through the water purifier comes out through the switching lever attached to the faucet. There are also multiple adapters, so it fits most faucets, excluding special ones like the one in image 3. Below is the manufacturer's product description. 【Easy Installation】 All the necessary hardware (wrench and adapters) are included, so you can easily install this filter system. It can also be easily connected to most standard kitchen faucets and taps. You can instantly switch between tap water and filtered water by turning the switch. Operating temperature: 5~38℃ Operating pressure: 15~100psi/100~689kPa Note: Please keep the wrench for later use. 【For Your Health】 The filtration process adds minerals beneficial to your health, such as calcium, magnesium, and potassium, and it is normal for the TDS value to increase (tested by a third-party lab). Note: This system does not lower the TDS value. This system is made of 304 food-grade stainless steel with a sophisticated, brushed appearance. No fingerprints, BPA-free. By using only safe materials, you can obtain clean and healthy drinking water. 【High Flow Rate & Long Life】 When connected to tap water, you can get a lifespan of up to 12 months or 8,000 gallons of filtered water (may vary depending on water conditions). By using advanced filtration technology, the water flow reaches up to 1.6 gallons per minute. 【Multi-Stage Filtration System】 The 5-stage filtration system can effectively reduce impurities commonly found in tap water, including colloids, sediment, and up to 99% of chlorine. It also reduces heavy metals, hydrogen sulfide, and fluoride, providing safe, delicious, and fresh drinking water (tested by a third-party organization). 【No Construction Required】 No drilling or plumbing work required.