The Lawn Mower® 4.0 features powerful upgrades and keeps some of the most popular features of its predecessor. 7,000 RPM motor with QuietStroke™ technology for low vibration and rechargeable 600mA li-ion battery. Wireless charging system. *SkinSafe™ Technology. Waterproof** for convenient use in the shower. 4000k LED spotlight with diffuser. Easily cleaned under running water. As part of a comprehensive male grooming product lineup, this groin and body trimmer provides the best and closest trim for your entire body, including chest hair, back hair, and pubic hair. This product includes an additional SkinSafe™ Replacement Blade. *SkinSafe™ technology does not guarantee cut protection. **IPX7 rated to protect against immersion in up to one meter of fresh water for up to 30 minutes.