We will carefully read your message and reply you as soon as possible.
Diameter16.25MM, high5.89MM
Function: anti-water, anti-shake, anti-rust; the shell is made by 304 stainless steel, never rust; the chip is made by new TM1990Awafer, unique 64bit serial number of the world. Full compatible with ds1990A(R).
Diameter16.25MM, high5.89MM
Function: anti-water, anti-shake, anti-rust; the shell is made by 304 stainless steel, never rust; the chip is made by new TM1990Awafer, unique 64bit serial number of the world. Full compatible with ds1990A(R).
