1936-20.4: OtterBox 1936 BlackBerry 8110, 8120, 8130 Pearl II Black Defender Case Layer 1: Thermal formed protective clear membrane to safeguard screen and keyboard against scratching as well as dust and dirt* (layer optional depending on the level of ruggedization desired). Layer 2: Hi-impact polycarbonate shell. Layer 3: Silicone skin absorbs bump and shock (silicone includes innovativeretaining features to hold it in place). Note: This case is not fully protected against water. The case will provide some protection against water and dust. This case is not intended for underwater use. Ideal for frequent travelers, business professionals and everyday enthusiasts. Three protective layers provide bump, scratch and drop protection: