Porodo Lifestyle Smart Dumbbells - Gray Battery Capacity: 200mAh, providing long-lasting workout sessions Transmission Range: 10M, allowing you to work out freely without being tied to your device Working Time: 6 hours of continuous use to power through your exercises Recharging Time: 2 hours with the Type-C charging port, offering fast and convenient charging Bluetooth V5.1: Advanced connectivity to sync with your smartphone or tablet for interactive coaching and fitness tracking Advanced Tracking & Coaching: Monitors your exercise progress and provides personalized coaching during workouts Lightweight Design: Perfect for home gyms, ensuring portability and ease of use Compatible with Fitness Apps: Syncs with your favorite fitness applications for detailed progress tracking