The highly durable construction of the CK32IS reflects the operational reality of these environments: Breakage in a hazardous location is more than a matter of downtime and inconvenience - it's potentially lethal. The rugged CK32IS has achieved an IP67 sealing and 5 foot drop spec, and is the only mobile computer to achieve Zone 0 certification, which designates "double fault" safety in environments in which flammable gases are always present under normal operating conditions