Caution: Keep out of reach of children. Do not clean the product in water. The following people should not use the product: People with sensitive skin, people with allergies, or in areas where there are pimples or acne. Do not use other than on the face or neckline. Do not modify, disassemble or repair. Since the blade is precision machine, handle it carefully. Check that the blade is not damaged before using the product. Only use on bare skin. Using the product when soap, cream or lotions have been applied may lead to malfunctions. When the trimmer begins losing power, replace the battery. The battery may leak if not replaced promptly when it reaches the end of its life span. Do not clean the product with alcohol, benzine, etc. Wipe with a dry cloth or a cloth which has been moistened with a dilute soap solution. Only use AAA (LR03) alkaline battery. Since other battery is not as powerful, the time for which the product can be used is dramatically reduced. Specifications: Power supply: Battery. Battery size: 1 AAA (LR03) alkaline battery (Sold separately). Weight: 32 g (including battery). Airborne Acoustical Noise: 62 (dB(A) re 1pW).