High-tech dumbbell by gyro tech Don’t need to buy an array of weights, awesome Power Dumbbell designed by Jun Young Choo is a great option in weight training tech that you can use only one set to modify its intensity by gyro tech. Source Related posts on VUING:Innovative motorbike helmetNew Starpath TechnologyImages of rocket flames of the most powerful rocket booster engine captured by NASA's new camera sys...Side by side comparison of the fastest, strongest and most agile human bodies in the world