SMAKN DCDC Converter 12V Step Down to DC 4_2V3A Power Supply Module

Specifications: Input range: 8~23v Output voltage:4.2V Output current/power:3A Efficiency: ?96% Weight: 30g Size(LxWxH): 26×36×21(mm) Cable length: 100mm Package included: 1 x DC12v to 4.2V 3A Converter Please note: 1> SMAKN is a registered trademark and the only authorized seller of SMAKN branded products. 2> SMAKN provide you various kinds of great products at the lowest possible prices, welcome to our store and get what you want !!! 3> SMAKN highly appriciate all customers' opinions to improve the selling ,also if anything you unsatisfied, pls contact our customer service department for probable best solution.