This product is widely used in outdoor activities. The pest control ultrasonic repeller uses newest ultrasonic and electromagnetic waves to drive away mice, rats, spiders, ants, bugs, cockroaches, mosquitoes, fruit flies, flea, crickets, gnats, insects and rodents. Features: 7-band ultrasonic infinite loop scan (13-25KHz/26-35KHz/36-45KHz/46-55KHz/56-65KHz/66-75KHz/76-95KHz) Variablefrequency band will be in return every 2 seconds and all frequency can work together. Wide applicable scenes An essential item for all outdoor activities, especially for camping, hunting, mountaineering, running, hiking and so on. More safe for child and pet Thisrepellent is 100% safe and effective. Ultrasonic sound is inaudible to humans and household pets.Environmental friendly alternative to harmful and dangerous Rechargeable battery Lithium batteryis rechargeable by using micro USB cable in package. Portable hook for carrying Comes with a hook, you can hang it outdoors. Specifications: Sound frequency: 15~ 95KHz Effective range: 10-70square meter Output frequency: 13KHz ~ 95KHz Product color: white / black Material composition: ABS Working current: 1.8MA Battery capacity: 100mAh Battery type: polymer lithium battery Charging method: USB charging (support fast charging) Itemsize: 4.45 * 1.25 * 6.2cm/1.75*0.49*2.44in Itemweight: 30g /1.05oz Package size: 2*6*7cm /0.78*2.36*2.75in Package weight: 33.6g /1.18oz Notes: 1. This product can be used with USB power adapter, computer, mobile power,etc.. 2. To ensure the stability of using, it is recommended to use the charger of 5V-2A or mobile power supply. Package Lists: 1* Pest Repeller 1* Hook 1* USB Cable 1* User Manual