OneBlade Electric Shaver and Trimmer - QP2510-13 Edge, trim and shave hair, no matter the length. Designed to cut hair, not skin. Trim, shave and edge. Rechargeable, wet and dry use. Unique OneBlade technology. Enjoy smooth edges. Minutes. Get rid of hair. Create precise lines and edges with a double-sided razor. Two clip-on stubble combs (1 and 3 mm) for even stubble. Durable OneBlade. Long-lasting battery. Dual protection system. Run time: 30 minutes. Charging time: 8-hour full charge. Automatic voltage: 100-240V. Replacement head models: QP210, QP220, QP610, QP620. Replace head every 4 months.