Hello. Thank you for visiting our store, we buy things in a licensed pharmacy in the European Union. TICKLESS HUMAN - Ultrasonic repellent device for repelling ticks and fleas during hunting, sports, walking, relaxing in the forest, park, etc. Does not contain chemicals or aromatic substances, but emits pulsating ultrasonic pulses with a frequency of 40 kHz, which are not harmful or unpleasant to humans or animals, but they interfere with ticks, keeping them away from people or forcing them to leave. Attaches to clothing without obscuring the slots. The radius of action is 3 m. Warning: 100% protection is not guaranteed in areas with very high tick infestation. Dose Usage: Remove the plastic protective tape (PULL) and press the button once to turn the device on or off. The indicator flashes green 4 times to indicate that the device is on, and flashes red once when turning off. When the device is active, the indicators flash every 5 minutes. After 8 hours, the device automatically turns off. The battery is not replaceable, its operating time is about 3000 hours. Technical warranty is 6 months. Moisture cannot damage the device (drip-proof), but the device itself is not waterproof - direct contact with water should be avoided or the wet device should be dried, for example, with a hair dryer. Keep out of reach of children.