Size: 3cm (length) x 4cm (width) x 1.5cm (height) Color: Beige Weight: 12g About TICKLESS TICKLESS emits ultrasonic waves that are inaudible to humans and pets, preventing ticks and fleas from infesting. It is safe to use as it does not use chemicals. The built-in battery provides approximately 9-12 months of effectiveness. The effective range is 1.5 meters in radius. Chemical-free, odorless, and protects pets of all ages. How to Use: Attach it to your pet's collar, etc. When you pull out the insulation sheet, the LED will light up and the switch will turn on. To check the battery, press the gray part; if the LED lights up, the battery has remaining power. Can be used for all dogs and cats. No matter the breed or size. *After pulling out the insulation sheet, the power is always on and will operate until the battery runs out. The Power of Ultrasonic Waves The frequency audible to humans is 20Hz~20KHz. Pets can hear ultrasonic waves, but they cannot hear the 40 kHz frequency of TICKLESS. Precautions: For maximum effectiveness, always keep the device attached to your pet. If ticks or fleas are already present, clean your pet with shampoo, etc., to remove them. *Please note that the effect may be weaker depending on the surrounding environment, such as areas with many ticks and fleas. It is not waterproof, so if the device gets wet, dry it immediately. Keep out of reach of children to prevent accidental ingestion.