The TWS KZ S1 S1D Bluetooth 5.0 One Touch Dynamic Earbuds is Premium Quality TWS true wireless hybrid technology headset with HIFI Sound Quality Upgraded Earphone, Longe lasting battery with fast transmission and HD Super Bass Sound.

Important Note:

• S1D is Dynamic version (1DD), White and Black, Not Support Game Mode.
• S1 is Hybrid technology verison (1DD+1BA), Gray and green, Support Game Mode.
• 2 versions of the packaging are different.