Variable Frequency 8.4V CordlessBody Muscle Relax Display Screen Hot & Cold Percussion Massage Gun Mini Portable 1,Wave vibration massage helps to relieve muscle soreness and stiffness , especial for the sportsman and the patient ; 2,The speed intensity has 6 level from slow to fast , you can adjust what speed you want ; Deliver up to 3200 percussions per minute ; 3,6 rechargeable head attachments : 4 pcs plastic heads and 2 pcs hot or cold head , you can choose which style you want ; 4,With one metal head and the heat mode button on the back , which for 1-2 seconds and become hot on the head , it's very comfortable for the skin ; 5,With the cold head , which is very soft and can put in the ice box for freezing some time . It can bring the cool and comfortable feeling on the skin ; 6,The hot and cold function is good to the skin of the face and the body ; 7,Promotes circulation and Improves range of motion and helps accelerate warming up and recovery ; 8,Using the brush motor imported , it's the lowest noise in the world : only about 50 db ; 9,DC 8.4V , use the rechargeable lithium-ion battery ( Up to 4-6 hours of use per charge ) , 2000 mAh ; 10,The charging time is 3-4 hours , the working time is 2-3 hours according to different intensity ; 11,The Led Display in the middle of the gun , which show the intensity of percussion function ; 12,The working time is 15 minutes one time , with the overheat protection inside ; 13,With the Type-C USB cable , which can pass the EMC testing ; 14,The gift box \ manual and carton packing ; 15,The color is blue \ slivery \ black or customized color and logo ; 16,The gift box : 29x23.3x8.2cm , G.W. is 0.95 kg ; One carton can hold 20 pcs . The carton size is : 59x48x42 cm , G.W. is 20 kg .