Perfect for time lapse, commercial, or cinematic applications, the Movo Photo WMS80 Motorized Video Slider Track System enables professional-quality motion control for a range of cameras, camcorders, and DSLRs. Track effortlessly and smoothly to inject a new sense of motion, emotion and artistry into your shots. Legs are adjustable to fine-tune balance. The Movo Photo WMS80 Motorized Video Slider Track System is perfect for hobbyists who want to elevate their work or professionals who need support for complex, creative shots. Time release, real time motion, stop motion, and more: this unit is a versatile and effective tool for creating visually outstanding work. Slide system motor is integrated for optimum smooth function. Tethered remote allows you space to set-up your shots and operate the unit. Movo Photo WMS80 Motorized Video Slider Track System supports up to 11 pounds safely and effectively. Solidly constructed from durable high quality aluminum, this track system is designed to last. The WMS80 is powered by 4 18650 type rechargeable batteries (3 for unit, 1 for wireless controller) The batteries and charger are sold separately. Optional 12V AC adapter (not included) may also be used. Specifications Weight: 12 lbs (5.5kg) Load Capacity: 11 lbs (5kg) Track Length: 37-inches (95cm) Speed Intervals: 2.3mm per second to 4.5mm per second PLEASE NOTE #1) Slider cannot be operated manually #2) Motor noise can be picked up by camera's mic. Use of external microphone is recommended.