Description:1.Clip:Insulating material,to ensure a safe bite, make test result is more accurate2.Cable length:1M extended cable lengthis more convenient to use3.Interface:seamless docking, stronger, long life and durable4.Button:4PIN/5PIN,changed to each other. TEST is the start button5.Light and compact design,easy to carry and storage. Dimensions: 12*6*2.5 cm Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding< br> 2. The color may vary depending on the display. Please understand< br> Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name) is incorrect, the order will not be delivered correctly.) Package includes:1* Relays Teste