Two Nozzles: New upgraded accessory fits for more functional usage. One is a pointed nozzle, the other is a round nozzle. Pointed nozzles can be used for the hard-to-reach areas Free Speed Control: Free control blower speed instead of level switch mode, fits for different usage situations Environmental: Energy saving, high-cost performance. Kica JetFan 2 electronic duster blower can be recharged and reused, and the gas is colorless, non-toxic, liquid-free, and chemical-free Multi-Functional: KiCA Jetfan air blower can be used for cleaning computers, laptops, keyboards, camera, drying hair, shooting equipment, and astronomical equipment, car interiors, inflating balloons, and outdoor inflatable cushions Specification: Minimum speed: approx. 22500 rpm Maximum speed: approx. 101000 rpm Stepless speed control, sliding the speed control button can adjust the wind speed. Working voltage range: 12.8V~16.8V Working temperature range: 0C -+40C Storage temperature range: -40 ° C~+80C Charging time: approximately 3 hours and 10 minutes (5V/1A) Product weight: 301g (reference value) Product size: 74x37.4x128.8mm Maximum battery life: approx. 4 hours and 30 minutes (low speed, laboratory environment)