The KOKA II ONE is a dosimeter for Gamma and X-ray personnel measurement. This is far better in technology to TLD, Glass crystal, OSL and film type dosimeters because you can read accumulated dose at any time and does not always require machine reading.
The KOKA II ONE is designed to detect the presence of ionising radiation and estimate the values of the ambient dose-equivalent, the ambient equivalent of photon (gamma and X-ray) ionising radiation dose rate.
The unit acts as is a real-time mini survey meter as well, with over 500 hours of battery life.