Product Information: 
CAT S31 - 16 GB - Slate grey - Unlocked - Verified refurbished
 
Refurbished electronics are like new – just better for the planet and your pocket. Our sellers are electronics experts who test and verify that every device is clean and 100% functional before it goes out for delivery. You get what it says on the box or your money back.
 
Filter specifications:

Colour - Slate grey
SIM card - Unlocked
Screen size (in) - 4.7
Storage - 16 GB
Model - CAT S31
Double SIM - Yes
Memory - 2 GB
Processor speed - 1.1 GHz
Processor brand - Qualcomm
Processor core - 4
Megapixels - 8
OS - Android
Resolution - 720 x 1280
Connector - micro USB + Jack 3.5mm
Network - 4G
Release Date - November 2017
SD Card Slot - Yes
Year of Release - 2017
eSIM - No
Foldable  - No
Dual SIM - Dual SIM
Brand - Caterpillar
Weight - 200g

Refurbished phones are not guaranteed to maintain their waterproof seal.