Product parameters: Rated voltage: 5V Rated power: 5W Charging time: 1.5 hours Product Features: Multifunctional use - All in one The all-in-one trimmer for your choice of beard, head, body, facial styling and other trimming needs.   Powerful and durable motor - Long lasting sharpness To deliver maximum power, oraimo SmartTrimmer features an all-metal motor that has been reinforced with hardened steel. Integrating with stainless steel blades, SmartTrimmer creates clean, smooth cuts. LED indicator - Smarter and easier LED display shows battery power and reminds you to charge. The built-in rechargeable lithium-ion battery provides up to 90 minutes of runtime per charge in just about 1.5 hours of charging. Travel Lock - More considerate The travel lock prevents the mower from accidentally starting in luggage. Lock Travel Lock: Long press the switch button for 4s. (In power off state) Release travel lock: long press the switch button for 4s.