• Bluetooth-connected weighted jump rope handles designed for high-intensity interval & endurance fitness training
• AMP 2.0 lets you easily switch between up to 4 sets of AMP handles for smooth rope transitions, and use a triple-click on your Bluetooth handle to instantly rewind intervals
• Burn calories faster: Crossrope App provides personalized jump targets, benchmarks and stats tracking, plus Free Jump Mode. Membership activation instructions delivered upon product receipt
• Elevate performance training in major muscle groups: real-time jump counting technology & feedback
• Compatible with Crossrope weighted jump ropes and ropeless (ropes and ropeless attachments sold separately)