Here is the link to the manual(EM4370): https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/92EM4370TS05%E8%AF%B4%E6%98%8E%E4%B9%A6_80g%E5%8F%8C%E8%83%B6%E7%BA%B8%2B%E8%83%B6%E5%8C%85_VEVOR_EM4370_70P_105x148mm__20221129_1683015266440.pdf.<br/>
By vevor