The XR15 player unit is the latest addition to the Game Day Signals product line.  The XR15 is backwards compatible, meaning it will work with T100 coach units and XR5 player units.  It can be ordered with an integrated watchband and worn like a regular watch, or it can be ordered with a plain back.  If the plain back version is selected, customers will need to order a separate band (sweatband, neoprene wristband, or glove band) to wear the unit.   The XR15 has several new features that include: On/off button and menu button Last sign recall Longer battery life Larger and brighter, full-color display Updated case design for improved durability Customizable font settings Smaller overall size compared to the XR5