The Topcon Tesla Field Controller is a portable data collector that works with both total stations and GPS units. It will process the data so you can use it while still in the field. The 4 GB of memory and 256 MB of RAM, along with Windows Mobile 6.5.3 OS, you can run most Topcon software. With wireless technology with a range of 1000', it is easy to transfer the data by either Bluetooth or WiFi.
Since it uses rechargeable batteries, Topcon Tesla Field Controller is prefect for field use. The batteries will last up to 16 hours, but if they start to lose their charge while on the job, you can change the batteries and keep working without losing data. You also access the SD and SIM cards under the batteries, for additional memory storage.
The Topcon Tesla Field Controller is also built to stand up to a variety of weather conditions. It has a rating of IP-67, which means it can handle dust for 8 hours. It can also be submerged in 3.3' of water for up to 30 minutes without damaging it. It is also protected against falling from 4' up as well as extreme cold or heat.