?With convenient clip on its back and wrist band， the Smart Sensor AR110A Ultrasonic Mosquito Repeller with Wrist Band goes wherever you are to provide hours of protection. It produces ultrasonic noise that is harmless to humans and animals to deter mosquitoes in a large area. And it has two modes; mode one simulates the wing beats of male mosquitoes to deter annoying female mosquitoes that bite while mode two simulates the wing beats of dragonfly. Compact and lightweight design won’t add extra burden. Isn’t it brilliant? Click and buy now!                                    Features             Offer a safe and simple way to rid you of annoying mosquitoes<br> Ideal for outdoor uses like hunting， fishing， or camping<br> Produce ultrasonic noise that is harmless to humans and animals<br> Built with two modes that fit different situations<br> Mode one simulates the wing beats of male mosquitoes to deter annoying female mosquitoes that bite<br> Mode two simulates the wing beats of dragonfly<br> No chemicals， odor free<br> Convenient clip on its back easily attaches to the waist belt or pocket<br> Come with a wrist band for more convenience<br> Sleek design， lightweight      <br>                                                            Specifications             Material     Plastic    <br> Dimensions     (2.28 x 1.46 x 0.67)" / (5.8 x 3.7 x 1.7)cm (L x W x H)    <br> Weight     0.60oz / 17g    <br> Color     Silver    <br> Voltage     DC 3V    <br> Power Consumption     2-4 mAh    <br> Frequency     18.4-38.4 KHZ           <br>                                                             Package Includes            1 x UltraSonic Mosquito Repeller<br>1 x Hanging Belt<br>1 x 3V Lithium Battery <br>