Features 1、3 skipping modes(Free Skipping Mode/Time Countdown Mode/Number Countdown Mode) can optimize you exercises. 2、Allows you to change the mode between Rope Jump and Cordless Jump. 3、Accurate counter with high-precision chips,it can calculate your time,skipping number and calories. 4、Each handle builts in a weight block.Weight loading design for handles make your exercise more effective.Also you can remove them off with screwdriver. 5、Premium bearings ensure smooth rotation,effectively avoids twisting or coiling up. 6、9.8ft steel rope length to easily adjust as different heights. Silicone balls with shorts ropes for durability. 7、Anti-slip plastic handles for good grip. 8、No age limitation.Suitable for young,old,adult and children. Features: 3 skipping modes(Free Skipping Mode/Time Countdown Mode/Number Countdown Mode) can optimize you exercises. Allows you to change the mode between Rope Jump and Cordless Jump. Accurate counter with high-precision chips,it can calculate your time,skipping number and calories. Each handle builts in a weight block.Weight loading design for handles make your exercise more effective.Also you can remove them off with screwdriver. Premium bearings ensure smooth rotation,effectively avoids twisting or coiling up. 9.8ft steel rope length to easily adjust as different heights. Silicone balls with shorts ropes for durability. Anti-slip plastic handles for good grip. No age limitation.Suitable for young,old,adult and children. Specification: Color: Black&Yellow / Black&Red / White&Black / White&Pink (optional) Material: ABS + PC + Steel + PVC + Silicone + Plastic Steel rope length: approx. 3 meters / 9.8 ft Handle size: 176 * 28 * 26 mm / 6.9 * 1.1 * 1.0 in Ball diameter: 34.7 mm / 1.4 in Unit weight block: approx. 31 - 43 g / 1.1 - 1.5 oz Power by: 1* CR2032 Button Cell (included) Package size: 189 * 130 * 40 mm / 7.4 * 5.1 * 1.6 in Package weight: approx. 390 g / 13.8 oz Package List: 2* Handles (each handle builts in a weight block) 1* Steel Rope 2* Silicone Ball With Rope 1* Spare CR2032 Button Cell 1* Screwdriver 1* User Manual 1* Storage Bag NOTE: The handle is already installed on a CR2032 button cell,if the battery runs out,please replace it with provided spare CR2032 button cell. Package List 2* Handles (each handle builts in a weight block) 1* Steel Rope 2* Silicone Ball With Rope 1* Spare CR2032 Button Cell 1* Screwdriver 1* User Manual 1* Storage Bag NOTE: The handle is already installed on a CR2032 button cell,if the battery runs out,please replace it with provided spare CR2032 button cell.