Feature: - With armrests, it is convenient to lift up the riser, move and carry. - Contains a large-capacity lithium battery, which can be used for 80 cycles once fully charged. - Small and light, does not take up space, can be used on sofas and seats. Specification: Name: Intelligent Power Booster Folding size: 420 410 54MM 16.53 16.14 2.12 inches Extended size: 420 410 330MM 16.53 16.14 12.99 inches Product material: environmentally friendly ABS engineering plastics Net weight: 6.5KG Maximum load: 150KG 330 lbs Package List: 1 Portable Lift Seat Note: - Due to the difference between different monitors, the picture may not reflect the actual color of the item. - This product is measured by hand, and the error of 1 3cm belongs to the normal range, please refer to the actual product received.✓ Works on: Use inside or outside the home on most armchairs and sofas. The standing aid is portable so you can also take it on the go. for use in wheelchairs, automobiles, reclining chairs or office chairs with non-lockable wheels. ✓ Application: Small and light, does not take up space, can be used for sofas, seats, and can be used for most armchairs and sofas indoors or outdoors. ✓ Self powered: Contains a large-capacity lithium battery, which can be used for 80 cycles once fully charged. ✓ Quiet and comfortable: One-button up and down, silent and silent operation one-button control, including three states, left-click to drop, center click to stop, right-click to lift up, rechargeable, easy to carry. ✓ Ergonomics: The lifting arc of the seat auxiliary lifting pad is ergonomic, and can be stopped at any time during the process of rising and falling. Safe and non-slip, ultra-thin and portable, thin and light.