Specification: Product charging current: 5V/300Mah Charging method: Type-C interface Charging time: 90-120 minutes(When charging, the red light will turn on, and when fully charged, the blue light will turn on. The product can be used for 2000 cycles) Light source: 3x460NM blue light+1x910NM infrared light Product standby time: 4 months: Product working time: 7 minutes automatic shutdown Product usage time: 6 cycles (every 7 minutes) Usage: 1. Clean and soak nails 2. Trim nails 3. After turning on the phone, clamp the nails 4. Open and remove it after seven minutes Products include: Host * 1 Instruction manual * 1 USB Charging cable * 1 Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement. ( 1 inch = 2.54 cm )