The dumbbell seesaw shoulder press is an exercise targeting the deltoids and triceps. The difference between this movement and the alternating shoulder press is that both dumbbells keep moving throughout each rep, rather than having one weight be stationary while the other moves. This piston-style pressing increases time under tension and may allow you to complete more total reps than with alternating reps.
Each deltoid remains under tension throughout the set
Requires greater stabilization than the alternating shoulder press