MaterialThese digital pendants are made of high-quality stainless steel, which is waterproof and corrosion-resistant and will not be damaged or worn.Package30 license plates with keychain. Numbers 1 to 30 are dialed. Diameter: 30mm.Time-savingEach tag is equipped with a stainless steel key ring, which allows you to assign numbers to keys for management, reducing the time and pressure of finding keys. Quick identification can improve work efficiency.Easy to carryLightweight and easy to carry. Because it comes with a key ring, it can be hung on the bag, easily opened and closed, and digital key management is possible.Wide range of applicationsSuitable for a variety of occasions, such as home, pet house, office, hotel, workshop, sauna, landlord, stadium, rental management company, accommodation, storage facilities, etc.