Comes with FREE Battery. the battrey is included the product SAFE TO USE--Eyebrow trimmer is an everyday maintenance clean up tool to be used The 18K gold-plated head is hypoallergenic and gentle on all skin types. EASY TO CARRY--Portable lipstick size makes this eyebrow razor convenient to be put in your bag, during a party, traveling or business trip,you can put it in your purse or pocket for on-the-go use it anytime, anywhere