SkinSafe Technology The Lawn Mower 4.0 features ceramic blades with SkinSafe technology that are replaceable and precision-engineered for maximum confidence while trimming below-the-waist. QuietStroke technology The Lawn Mower 4.0 features a premium 7,000 RPM motor with QuietStroke technology for added confidence while trimming your nether regions. 600mA li-ion battery that is rechargeable by a wireless charging system. Waterproof The Lawn Mower 4.0 trimmer is waterproof for easy use in the shower. Comfortably operate The Lawn Mower 4.0 trimmer in wet or dry conditions. Wireless charging system​ The dock wirelessly charges The Lawn Mower 4.0 by transferring energy from the dock to the trimmer via electromagnetic induction.​ Tri-level charging & power indicatior The Lawn Mower 4.0 is equipped with a tri-level charging & power indicator. LEDs light up individually when trimmer is on to show charge level in increments of 33%. 3 lights = full charge. 2 lights = 66%. 1 light = 33% 4000k LED spotlight The Lawn Mower 4.0 features a 4000k LED spotlight with diffuser. Protection circuit The Lawn Mower 4.0 trimmer features an over-charging and over-discharging protection circuit. The over-charging and over-discharging protection circuit is a feature within the device that helps reduce the risk of the battery over-charging or over-discharging. This feature helps enhance battery performance. Over-discharging = draining the battery too low Over-charging = charging the battery too much Adjustable guards The Lawn Mower 4.0 has two adjustable trimming guard sizes 1 – 4, with 3, 6, 10, or 13mm settings. Premium craftsmanship The two-toned black finish is hot foil stamped with a black chrome logo.