CPR COMPRESSION RATE WRIST MONITOR WITH CASE - This CPR monitor measures compression rates through lights and includes a blue EVA carrying case, designed for both Adult/Child and Infant CPR training FLEXIBLE WRISTBAND ADJUSTS TO ANY SIZE WRIST - The CPR wrist compression monitor will fit most size and students to aid in the training of CPR with the slap-style latex free silicone rubber design and students to aid in the training of CPR with the slap-style latex free silicone rubber design AHA INSTRUMENTED DIRECTIVE FEEDBACK DEVICE COMPLAINT - The CPR timing monitor measures real-time audio feedback for compression rate. Paired with a manikin that provides depth measurement, this is AHA compliant GREEN LIGHT INDICATES 100-120cpm, RED WHEN OUTSIDE RANGE - This provides a solution if your manikin does not provide compression rate monitoring. This detects rate of actual compression and indicates visually whether to push faster or to push slower WNL PRODUCTS DIFFERENCE - WNL Products