describe:1. [Full Leg Air Pressure Massage] Built-in 3X2 air bags simulate hand squeezing. They inflate and deflate to knead and compress thighs, calves and feet, effectively relieving everyday joint and muscle pain and tension. Help you overcome the fatigue and stress of the day and recharge yourself. Note: This leg massager does not have vibration and rolling functions.2.Easy-to-use LCD screen controllerHandheld controller with LCD screen and 3 control buttons. Clearly displays mode, compression strength and temperature levels. Long press the power button to turn the device on or off, short press to adjust the intensity. Easy to use and ergonomic, it's also suitable for seniors.3.6 Modes, 3 Intensities, 3 Temperature LevelsThis leg massager has 6 modes. Includes massages that target different areas - the whole leg, thighs and calves or just the feet; and 3 techniques - squeeze, pinch and relax. You can also choose the most suitable intensity (low, medium, high). 3-level heating keeps your knees warm and can be turned off independently. The knee section only heats the air, not compresses it.4. [Automatic shutdown system after 20 minutes, safer to use] The foot, leg and knee massager automatically stops after 20 minutes of use to avoid overuse due to falling asleep or forgetting to turn it off due to overwork. Provide users with maximum security and convenience.5.Perfect GiftThe size of this air bag squeeze massager can be easily adjusted to suit different leg sizes, with buckle strap design and 4 extension straps. (Maximum thigh/calf size: 39"/31"). The fabric inside is soft and breathable. An ideal gift for elderly parents or a husband or wife who is often busy at work or away from home.Specification:Power specification: 5V 2AOutput voltage: 3.7V 2.5AProduct power: 10WAutomatic shutdown: 20 minutesBattery capacity: 2400mAh 18650 lithium-ion battery rechargeableTime: 3-4HUse time: 2-3HPower cord length: 1. 0mNoise level: 57dB in low mode; 60dB in high mode6 modes: Auto, Leg, Foot, Press, Pinch, RelaxNotice1. Cleaning method: Do not soak in water as the electronic circuit may cause damage.Wipe with clean water and let dry naturally. Do not expose to the sun. Ultraviolet rays will change the color of the fabric.2. Insert the inflation hose: the letters R and L must correspond to the R and L sockets on the regulator for normal inflation. Otherwise there would be no aerial show.size chart:Calf length approximately 40cm/15.7", calf circumference 38cm-45cm/15-17.7", thigh length 23cm/9.06", thigh circumference 50cm-60cm/19.7"-23.6", foot circumference 32 cm/12.6 inchespacking list1* Leg compression massager1*Controller1*USB cable1*Manualnotes:Please allow slight errors due to manual measurement and different monitors.