• Because the customer requests the specification, the material and the order quantity are different, the website price only provides the reference, the detail asks the customer service, we will wholeheartedly provide for you the most meticulous thoughtful

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• Judgment on the size of the external power box of the safe:

methodsa: use a ruler to measure the diameter of the plug for the external battery box of the safe (cabinet) (one is 2.5mm in diameter, the other is 3.5mm in diameter).

methodsThe second: the interface size of the external box of 3.5 is the same specification as that of the headphone cable plug we usually use. You can try it with the headphone. (anything smaller than 3.5mm is 2.5mm)