Suitable for many types of hair extension systems (keratin silky straight hair, pre-bonded hair, nail hair and stick hair). The ultrasonic makes keratin glue melt quickly, and then you can easily apply hair extension without high heat damage. When the power is switch on, the red light will show. Model: KT-A2 Time: Approx. 0-5 seconds Power: 25-30W Frequency: 50-60HZ Voltage: 110V-220V Size: Hand Piece: 120mm x 28mm x 45mm, Oscillator: 165mm x 120m x 55mm Weight: Approx. 1200g Output: 60cm Cord for outlet: 2.0m UK standard Plug