Each heating pad comes with its dedicated control button and offers two temperature settings, enabling independent control. Conveniently located on the side of the seat, the control buttons are easily accessible and operable while seated. This chair is powered by a rechargeable lithium battery.This hinged arm executive chair is beautifully upholstered in black Caressoftplus Vinyl for the kind of comfort and durability required for a long day at the office. It features a designer stitched back cushion and pivoting hinge arms that allow the seat and back to move independently and in tandem with the 2-to-1 synchro tilt mechanism and it comes equipped with an adjustable tilt tension control. The chair’s seat tilt allows it to be locked in any position within the tilt range for a truly personalized seating experience. Description: Back Adjustment: No Arm Type: Hinged Mechanism Type: Synchro-Tilt Infinite Lock:Yes Knee Tilt: No Tilt Tension: Yes Pneumatic Gas Lift: Yes Upright Lock: Yes Seat Slider: No Weight Capacity: 275 lb Chair Base: Nylon 27 Inch with Black Caps Casters: Dual Wheel Nylon 2 Inch Material & Color: Material: Caressoftplus Vinyl Color: Black Fabric Code: HP-0003 Product Dimensions: Product Width: 27″ Product Depth: 28″ Product Height: 48.5″ Max Product Height: 52″ Back Height: 32″ Back Width: 20.5″ Seat Depth: 19.5″ Seat Width: 21″ Seat Height: 19.5″-23″H Arm Height: 28.5″-32″H