【Five In One Weights Training】: You only need single dumbbells, you can have 5 sets of dumbbell training experience, the weight can be adjusted according to your own level, this cleverly designed adjustable dumbbell meets fitness hobbies the needs of practitioners and professional weight trainers.【1-Second Weights Change】: Turn the handle with one hand to quickly adjust to the required weight. There will be a corresponding pointer and a click sound to let you know that the adjustment is completed. This adjustable dumbbell allows you to enjoy a simpler and smoother workout.【Better Than Five】Only need 1-set of dumbbell space, you can have 5-sets of dumbbell training experience with 80% space saving.strength equipment are designed with advice of professional coach, committed to meet your needs for diversified weight training.【New Safety Structure Design】: Double safety buckles on the tray and handle bar, so that the adjustable dumbbells can only be adjusted on the tray, ensuring the safety and stability of the dumbbell pieces during exercise after leaving the tray.【The Benefits of Dumbbell Exercise】: The multi-weight one-piece design of dumbbells is very suitable for specific part and whole body exercises, bringing benefits such as building muscles, burning calories, improving cardiovascular and eliminating strength imbalances for your body and mind.