Tessel 2 is a connected hardware prototyping system that you can take into production. It features elegant command line tools that make it simple to deploy code, set Wi-Fi credentials, and manage authentication. It is programmable in JavaScript with the capacity to support other languages as well.
Tessel 2 is also an ecosystem which features plug and play modules require no soldering skill and it is high level APIs could make prototyping even faster than you can image.

Features :
- 2 Tessel Module Ports
Add sensors and actuators in one step
- 2 USB ports
Use peripherals like cameras and 3G/4G dongles to add more flash storage
- 802.11 b/g/n Wi-Fi
Connected out of the box and wirelessly programmable
- Ethernet
An ultra-reliable wired connection supports 10/100 ethernet
- 580MHz Mediatek MT7620n
Execute your program faster
- 64 MB DDR2 RAM & 32 MB Flash
Plenty of space for your code
- 48MHz Atmel SAMD21 coprocessor
Real time I.O and better power management
- MicroUSB
Power and tethered programming