This product has the same design character of U3700 series, portable basket system (the 1/2 that is R3131A) , dismountable type batteries can work 2 hours continuously.

• 该产物存在U3700系列的同样的设计特征，便携式的筐体（是R3131A的1/2），可组装式电池可陆续工作2小时。