About certification: We can only provide CE certification, there is no other certification can be provided, thanks for your understanding. Note: The battery is not included! Pls Read The Instruction Before You Use It Do not shift too fast, you need to switch one by one. Specifications Brand:SUNELEXE Model:L58 Speed control: F5-R2 Motor type: Brush motor Rated voltage(V):12 Rated speed(R/min):1700 Rated current(A):51 Rated power(W):612 Control handle: Telescopic type Maximum speed(km/h):10 Noise DB:50db Net Weight: 9.5kg(20.94lb) Gross Weight: 11.5kg(25.35lb) Propeller model(in):3 leaves/10.6 Packing size(cm):1014616CM(39.7618.116.29inch) Battery model recommendation: Choose 12V 150A batteries, the maximum power of 3 hours of sustainable operation.