Additional Details ------------------------------ Product description: Note: *Please confirm the size of your curtain track before purchase. *Smart hub and gate way are required for the feature of voice control and remote control. Specifications: Material: ABS Color: White Suitable Curtain Track Type: T-track(I-rail) / Inside grooved(U-rail) / Curtain rod (optional) Rated Power: 1W Motor Voltage: 5V Rated Torque: 3kg Speed: 20 seconds/meter Movable Distance: maximum learning distance is 20 meters Battery Capacity: 4000mAh lithium battery USB Port: 5V, 1A, Type-C Stand-by Power Consumption: 600A Work Time: about 6 months if open/close twice a day Item Size: 11.3*6.5*5.1cm / 4.44*2.55*2in Item Weight: 216g / 7.61oz Package Size: 17.8*19*6.5cm / 7*7.48*2.55in Package Weight: 710g / 25.04oz Packing List: 2 * Curtain Robot 2 * USB Cable 1 * User Manual