Note: This item is ONLY for 110V, not for 220-240V. Please confirm the voltage of your area before placing an order. Feature - Adopt 5W big power LED, long life span and low heating - Easy operation, safety and noise-fee - It can be adjusted arbitrarily within 5-40 seconds, and automatically shut down when there is no button operation after 20 seconds. - Constant light intensity. The solidification effect is not affected by the consumption of remaining power. - Touch-button for more comfortable and convenient to operation - Large capacity li-ion rechargeable battery, automatic shutdown, low battery alarm, replacement battery is easy to get. Specifications - Color: Black - Packing Size: 25 x 15 x 6cm. - Material: Plastic - Charger input voltage : 110V-240VAC,50-60HZ - Output voltage : DC3.7V - Battery capacity : 1400mAh - Battery voltage : 4.2V - Temperature : 5 C-50 C - Relative humidity : le;80 - Curing time and depth : 5S/3mm - Blue light wavelength : 420-480nm - Blue light : 1200-2000mw/cm sup2;