The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Review product guides and documentation before purchasing - User Manual (PDF) If you have several health problems indicated in the manual, it is recommended that you use the massager with caution or consult your doctor before making a purchase. Warm Tips Please do not use the device, when cases occurred as follows: You have a pacemaker or any other medical implant. You are suffering from heart disease.You are suffering from diabetes. Your bones are fragile or injured. You are suffering from cancer. Previous page Next page 1 Operational Details 2 Warm Tips Previous page Next page Warm Tips Please do not use the device, when cases occurred as follows: You are receiving treatment, or your blood pressure is not normal. You are suffering from osteoporosis. You are currently pregnant or having menstruation. Children or adolescents who are developing physically. Previous page Next page Under what circumstances should I not use it? During pregnancy or immediately after birth delivery. Patients with severe blood circulation disorders cannot be used under the above circumstance. If you have a fever or any abnormality in your body, be sure to consult a doctor before use. How many times can I use a day? The massager will automatically shut down after 30 minutes of continuous use. We do not recommend that you use a massager for more than 60 minutes in a day. Prolonged use will over-stimulate muscles and nerves and may have adverse effects. Can it be used for other parts than feet, calves? It is only for feet,calves.Use in other parts may cause accident or injury. What size feet and calves of users are suitable for? Foot width : about 4.7" to about 6.3" , Foot length 10.5", men's size US 11, Calf diameter: about 6.5" to about 9.4". The strength is too strong or too weak. The elasticity can be adjusted by the velcro wrap.When the velcro is loosely wound,the overall use strength and pressure will be relatively weakened. Otherwise,the overall intensity and pressure will be relatively strengthened. WELOV Massager-Perfect Gift for Women, Men, Dad, Mom and the Elder L700 Leg Massager Add to Cart L1700 Leg Massager Buying Options L700 Gift Edition Buying Options L500 Gift Edition Buying Options L500 Leg Massager Buying Options F500 Gift Edition Add to Cart F500 Leg Massager Buying Options Customer Reviews 3.9 out of 5 stars 592 3.9 out of 5 stars 81 3.9 out of 5 stars 592 3.9 out of 5 stars 592 3.9 out of 5 stars 592 4.1 out of 5 stars 149 4.0 out of 5 stars 147 Price $99.99$99.99 — — — — $89.99$89.99 — Heating Area Knees Feet, Calves, Knees Knees Feet Feet Feet Feet Intensity 3 Levels 3 Levels 3 Levels 3 Levels 3 Levels 5 Levels 5 Levels Massage Area Thigh, Calf, Foot Thigh, Calf, Foot Thigh, Calf, Foot Calf, Foot Calf, Foot Feet, Toes, Arch, Heel Feet, Toes, Arch, Heel Timer 30 Min 30 Min 30 Min 30 Min 30 Min 20/30/40 Min 20/30/40 Min Daily Relaxation ✔ ✔ ✔ ✔ ✔ ✔ ✔