Order Philips Series 3000 Stainless Steel Blades Cordless Nose, Ear & Eyebrow Trimmer online, to get a perfect grooming companion. Protective Guard System provides a cover over the blades designed to ensure they will never be in touch with your skin while safely guiding your hair towards the cutting element. The Protective Guard has been engineered to make trimming comfortable and safe, minimizing missed hair whilst protecting against hair pulling, tugging or nicks and cuts. This trimmer runs on one AA battery that is included in the box, so your trimmer is ready to use right away. To change the battery, open the device by gently turning the bottom part to the left. Pull the bottom towards yourself to reach the battery compartment. The new PrecisionTrim technology has been designed to provide an easy and efficient trim without all the pulling and tugging.