Electronic Digital Outdoor and Indoor Wireless Cordless Ropeless Skipping Rope Jumping Rope- Calorie and Jump Counter Slimming Lose Weight Wireless Skip Rope Shipping time around 7-21 days. SIZE : 44 X 150 (MM) Material:Plastic, Memory Foam Wireless skipping rope  no more foot tangling Calories mode; show the calories (Kcal) burned Counting mode; shows how many times youve jumped