ObboMed SU-3400 12V 13W Heated Massage Travel Pro-Lumbar Seat Cushion, Support Low Back/Waist for Long Drive/Sitting, Portable, Lightweight with Weight Balancer (Auto Off Setting) Lumbar support keeps spine in proper alignment, correct poor posture and relief lower back pain from long periods of sitting; additional heat therapy and massaging function for maximum back pain relief. Activated by pressure feature: automatically turns off when not leaning against it; including 12V car plug for car use/optional home adapter for home use (not included, check link: https://www.amazon.com/dp/B00XBNVJ4E). Easy height adjust by one weight balancer; ultimate intuitive function for users position preference. 3 Massage Modes: Normal, Wave, Pulse. ON/OFF wheel to set desired level of massage intensity (Min.  Max.); 2 Heat Settings: Low-gentle warm up, High-instant heat. High density polyurethane foam with unique saddle shape ensures best muscle relaxation for back stress and oppression. Activated by pressure : automatically turns off when not leaning against it. Easy height adjust by one counterweight; ultimate intuitive function for users position preference. Lumbar support keeps spine in proper alignment, correct poor posture and relieve lower back pain from long periods of sitting. High density polyurethane foam ensures great muscle relaxation for back stress and oppression. Unique saddle shape contours to body figure perfectly. Additional heat therapy and massaging function for maximum back pain relief. 3 Massage Modes: Normal, Wave, Pulse. 2 Heat Settings: Low-gentle warm up, High-instant heat. ON / OFF wheel to set desired level of massage intensity (Min.- Max.). 100% polyester cover not removable for wash. Includes 12V car plug for car use. Optional adapter for home use (not Included): <span class="a-text-bold">ObboMed Model PD-1202US</span>. Dimensions: 14 x 12.5 x 3.5 inches / 36 x 32 x 9 cm Color: Black Material: Polyester fabric cover and Polyurethane foam Working Power: DC 12V, 1.25A Current / Watts: 13W 1 x Pro-lumbar heated massage back cushion with counterweight 1 x Car plug 1 x Users manual 1 x Color box