Bluetooth

Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz^[3]) from fixed and mobile devices, and building personal area networks (PANs)...this info sourced from here

Several classes exist today:

(much more info here on wikipedia)

1. redundant
2. audio legacy
3. low power low bandwidth
4. more features such as mesh/higher bandwidth etc
5. more features such as audio, high bandwidth, long distance, scalable architecture such as LTE, current 

Glyn support the following:

This facilitates a fast to market approach with cost down path:

• Nordic silicon IC's (page on Glynstore see here)
• Telit modules with Nordic silicon (page on Telit see here)
• Raytac modules with Nordic silicon (page on Raytac see here)