Size: 3cm (length) x 4cm (width) x 1.5cm (height) Color: Black Weight: 12g ~What is TICKLESS?~ It emits ultrasonic waves that are inaudible to humans and pets, preventing the infestation of ticks and fleas. It's safe to use because it doesn't use chemicals. The built-in battery lasts for approximately 9-12 months. 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 and 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 a high concentration of ticks and fleas. It is not waterproof, so if the device gets wet, dry it immediately. To prevent accidental ingestion, keep it out of the reach of children.