Compatible with compatible with APL Watch 44mm Series 6/5/4; compatible with APL Watch Case with tempered glass screen protector.^ Approximately 300 crystals- compatible with APL Watch Jewelry case featuring a quadruple scintillating cubic zirconia stone, perfect for upgrading a casual outfit or complementing a luxurious evening look.^ Tempered Glass Screen Protector- Its tempered glass shield is made from the same protective film material used to military aircrafts; Full cover protective case provides daily protection against scratches and reduce chances of damage to your screen from impact forces and drops.^ Sensitive Touch- Only 0.1mm thickness cover maintains compatible with APL watch's original response sensitivity, ensuring quick app launching;^ compatible with APL watch case snap onto your device simply, buttons are easy to touch; No need to take off the case when charging the watch.