1Made of ABS material, which is durable and convenient, has a long service life. 2The product uses nickel?plated steel sheet to prevent the conductive sheet from rusting and affecting the use. 3Safe and reliable, the battery and the adapter are highly consistent, and will not fall off and shake during use. 4With small size, easy to carry and store, convenient to use and with good performance. 5Strict quality control and quality assurance, high safety factor, can be used with peace of mind.