GZDcjsc R5 Smart Ring - S M L

Features: The dust-proof waterproof level is IP68, and it can meet the application requirements of various environments. driven by the energy of the read-write equipment.No need to worry about the battery life Specification: Carrier frequency: 13. 56MHZ, 125KHZ RF distance: 1~3cm IC chip: CUID x2 ID chip: T5577 x2 NFC chip: Ntag216 x2 Host material: ceramic Size: S, M, L Perimeter (mm): S:50~58, M:58~63, L:63~73 Weight: 9 grams Package Include 1 x smart ring kit If You Have Any Questions Before Purchasing The Product, Please Us Via Email, And We Will Provide You With A Satisfactory Answer. Happy Shopping.