2.8cm of elastic material design, ear protection, will not damage the eardrum, safe and reliable. Configure two soft heads, easy to clean, easy to replace. Stylish and easy to use, travel-home essential. Using one AAA battery, first vibrate the earwax, then inhale the earwax as it escapes and enjoy the clear and noisy world.(the product does not contain a battery) Product Description 1. Material: PP 2. Size: about 13 * 2.8cm / 5.12 * 1.10in (due to manual measurement, there may be slight errors) Advantage: Easy to remove earwax, effectively clean the ears. Soft, comfortable, safe and elastic material, do not damage the eardrum, protect the ears Easy to clean and replace two soft heads. Suitable for children and adults. What is the difference between electonic and manual? Manual is not easy to search for earwax because you cannot see, you can only use it by feeling. But the electronic earwax kit provides 360 degree round inspiration, and it has a safe length to protect your eardrum, safe and clean. Instructions: Turn on the switch, hear the sound of rotation, put the suction head of the device on the ear , insert it slowly, then scrape the four walls of the ear canal back and forth. as with an ordinary ear digging, it will inhale the inhalation machine of earwax. Package: 1x Ear Cleaning Device 2 x Soft Heads