... • Standard pitch, full size, 4mm long travel keys. • Soft touch key feeling. • 380 Hours alkaline battery life. • ... 4mm travel, membrane key switch technology, and soft touch rubber dome feeling. The 88keys to work ... mouse The receiver unit accepts two types of IR data format, one is parex special encoding ... possible, 360degree possible in a close room.IR data formatFor both 1. Parex 34ms data pack ...