Replacement Instructions: (1) Use the big yellow screwdriver to unscrew the 4 case and remove the original watch band case. (2) Install the steel case and tighten the four short case screws. (3) Attach the steel strap and tighten the 4 long strap screws with a small red screwdriver. Note: When installing steel case screws, please first install two angled screws to balance and secure it. When installing screws on one side of the steel band, please insert two screws first, fix the position and then tighten. If you just received the MOD kit accessories and find the buckle is not locked or not smooth enough, you can drop a small amount of lubricant on the buckle joint and see the buckle will snap right away.
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