Lumia 640 LTE Screen Protector, HJ Power[TM] For Microsoft Lumia 640 LTE (AT&T, T-Mobile, MetroPCS)~ Premium Shatterproof Tempered Glass Screen Protector Clear Premium Shatterproof Tempered Glass Screen Protector For your Lumia 640 LTE This is 0.4mm thick chemically treated transparent tempered glass The tempered glass has an oleophobic coating that prevents fingerprints and other contaminants and makes the film easy to clean PERFECT MATCH and FIT: For device that also retains easy access to all functionalities, including all buttons, camera, headphone jack, and charging port. MATERIAL: Tempered Glass