To ensure that we meet your needs, OPOLAR offers one year warranty for defective products. Incorrect human operation, including but not limited to disassembling, burning, soaking, and dropping it, is not covered by the warranty.
Speed Mode: Low / Medium / High. There is little difference between level 2 and level 3 when it is powered by USB CABLE
Output Power(MAX): 4.5W
Battery Working Time (H): 4(High) – 8(Medium) – 15(Low)
Battery Specification: 3350mAh Lithium Battery
Battery Installation: Removable
N.W.(lb)(including battery): About 0.5