IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.5m MIL-STD-810G compliant
IP68/IP69K, MIL-STD-810G certifiedSealed against dust entirely and submersible to 1.5 metres for 30 minutes, plus rated for high-pressure water jets and drops from 1.5 metres; this is a genuine rugged phone, not a cosmetic one.
battery
8580 mAh, about 2 days light useThat large battery at 18mm thickness means roughly 14 to 16 hours of screen-on time on moderate use, or a full weekend if you are mostly calling and texting.
performance
Helio P35, 4GB RAM, basic gamingThe MediaTek MT6765V and PowerVR GE8320 handle 2D games, web browsing, and video playback fine, but demanding 3D games will lag or drop frames.
display
5.7 inch, 282 ppi, IPS LCDThe low pixel density makes small text slightly fuzzy at normal reading distance; bright and durable but not sharp unless you squint close.
camera
16MP main, thermal imaging moduleThe thermal camera (FLIR Lepton) is the real feature here for inspecting heat leaks, electrical faults, or body temperature; the 16MP regular sensor is ordinary.
charging
18W wired, roughly 90 to 120 minutesSlow by modern standards; a full charge from empty will take between 1.5 and 2 hours of plugged-in time.