Built-in 44pcs 660-850nm dual-core lamp beads, illumination 0m-20-25mW per square centimeter Supports intelligent adjustment, with five temperature levels available for adjustment Built-in 5000mAh large battery, providing long-term use The elastic band has high elasticity, is thin, has good breathability, and is very suitable for the elderly and sports people Covered by a highly translucent film, anti-sweat and anti-static, it fits the skin and is more comfortable and convenient to use Specification: Product material: ABS Rated voltage: 5V Rated power: 8.5W Heating gear: 3 gears, 45-55-65 Lighting gears: 3 modes, 4 levels of intensity Timing gears: 0 minutes, 15 minutes, 30 minutes, 40 minutes Battery capacity: 5000mAh/18.5wh Number of lamp beads: 44 1:2 (660/850nm) LED red light beads Battery life: Maximum gear: 2 hours Product size: 23*18.7*5cm Net weight: 370g Product certification: CE/RoHS/FCC/UKCA/quality inspection report Package included: 1 x Heated Knee Brace 1 x Long Strap 1 x Short Strap 1 x English User Manual 1 x USB Charging Cable Other things not included