a transparent case without words(A透明壳无字) b red and blue shell without words(B红蓝壳无字) a transparent case security guard(A透明壳保安) b red and blue shell security(B红蓝壳保安) a transparent case safe production(A透明壳安全生产) b red and blue shell safe production(B红蓝壳安全生产) a transparent case property management(A透明壳物业管理) b red and blue shell property management(B红蓝壳物业管理) a transparent case sanitation work(A透明壳环卫作业) b red and blue shell sanitation work(B红蓝壳环卫作业) a transparent case pay attention to safety(A透明壳注意安全) b red and blue shell pay attention to safety(B红蓝壳注意安全) a transparent case emergency rescue(A透明壳应急救援) b red and blue shell emergency rescue(B红蓝壳应急救援) a transparent case maintain order(A透明壳维护秩序) b red and blue shell maintain order(B红蓝壳维护秩序) battery type(电池款)

flash for 30 hours (with usb charging cable)(爆闪30小时（带USB充电线）) flash for 30 hours (with charger)(爆闪30小时（带充电器）)