Features: 【Upgraded Heat Emission Holes Design】 addition of heat emission holes at both side can help auto dolly to cool down quicker during working, which give longer to a new of camera video dolly. 【Mobile APP Control】Supports mobile phone APP wireless remote control, you can scan OR code on users manual to download APP, which is compatible with Android/ iOS smartphone system, and remote control distance is up to 8M without interference. 【Multiple Photography Modes】Supports time-lapse photography, parameter customization selection; can be placed on desktop or a flat surface for straight-line/ curved-line photography; supports video automatic loop recording without frequent operation, and A-B point positioning photography. 【Stepless Speed Adjustment】Maximum speed is up to 10cm/s, and speed is adjustable for 0%- steplessly; adopts stepping motor, precise control and low noise, close- video can be recorded quietly. 【Built-in Rechargeable Battery】Built-in 1800mAh rechargeable Li-ion battery can offer up to 4 hours service time after being fully charged; you can charge battery via type-c charging port and charging cable is provided. 【Wide Compatibility】max. 3kg load capacity and comes with a 1/4 inch & 3/8 inch mutual screw, auto dolly can work with DSLR/ILDC camera, camcorder, camera, mobile phone, etc. And APP’s shutter button supports most mirrorless camera. Specifications: Brand: Andoer Model: L5i Material: Load-bearing : max. 3kg Battery Capacity: 1800mAh Charging Time: About 3H Working Time: about 4H after fully charge APP Remote Control Distance: max. 8M(without interference) Speed: max.10cm/s, Speed Adjustable 0%- Item Weight: 446g/ 15.7oz Packing List: 1 * Auto Dolly 1 * USB Charging Cable 1 * Mutual Screw 1 * Rubber Ring(large) 1 * Wrench 1 * Users Manual(English & Chinese) Brand: Apexeon Manufacturer Part Number: BwB6aVpYHSVwBZbFPG43 Assembled Product Dimensions (L x W x H): 5.91 x 5.91 x 2.56 Inches