For HMT-1Z1 only. Compatible with the HMT-1Z1 but not Intrinsically Safe. Can be used with the HMT-1Z1 outside of hazardous locations. The USB Cable with Charging Protection for HMT-1Z1 is an extra Micro-USB cable for data transfer and charging. The cable includes a safety box that protects the HMT-1Z1’s safety circuits from power surges. These surges can damage the HMT-1Z1 and may occur when connecting the HMT1-Z1 to computers, wall chargers, car chargers, and other power sources. It is the only cable approved for charging the HMT-1Z1 and for moving files to and from the HMT-1Z1.This handy folding wireless keyboard and trackpad has been tested by RealWear for the HMT-1. The wireless keyboard and trackpad helps eliminate the need for bringing along your tablet or clipboard into the field to enter a larger amount of text or data. After the initial pairing process is complete, simply unfold the keyboard and it will pair automatically. Also, a mouse cursor appears like it would with a handheld Android tablet. A carrying bag and USB charging cable is included.