Porodo 55 LB Single Adjustable Smart Dumbbell with Bluetooth & LCD Display | Fitness & Workout Equipment Adjustable Weight: Easily adjust the dumbbell weight from 15 LBS to 55 LBS (6.8 kg to 25 kg) to suit your fitness goals. Smart Connectivity: Bluetooth V5.1 ensures stable pairing with your phone over a range of up to 15 meters. Built-In Speaker: Play your favorite music directly from the app through the dumbbell’s built-in speaker for a more engaging workout experience. LCD Display: Check your settings, weight, and more on the clear LCD display for easy monitoring. Posture Switch: Track and improve your workout form with the smart posture tracking feature. Type-C Charging Port: Fast charging with Type-C charging port for convenient and efficient recharging. Battery Capacity: 200mAh battery offers 6 hours of workout time with only 1.5 hours to recharge. Ergonomic Design: The weight adjustment handle makes it easy to adjust your weight settings.