I purchased this as a gift for a relative who is undergoing orthodontic treatment, but it turns out they already have one, so I haven't been able to give it to them and have been storing it at home. It's already wrapped, so I'll send it as is. Would it make a good gift? Purchase price: Approximately 18,000 yen Purchased 1 year ago Waterpik Cordless Select WF-10J010 Classic White This is an oral irrigator (water flosser). Waterproof specification (IPX7 rating) for use in the bath Rechargeable, no batteries required (approximately 4 hours of charging provides about a week of use) Water pressure can be adjusted in 2 stages The tip rotates 360° for thorough care Supports overseas voltage (AC100-240V), with a USB magnetic charging system