The Ricoh GF-1 External Flash is designed for Type R series cameras, including the GR Digital Camera. The GF-1 attaches to the camera body via the hot shoe and offers a guide number of 98' at ISO 100 and 105mm. Also, it has a zoom head with a range of 24-105mm on full frame cameras and a wide-angle panel which extends the range to 18mm. The flash even has wireless slave functionality and can tilt upwards 90° for bounce flash.
The GF-1 features first and second curtain sync modes as well as a recycle time of 4.7-5 seconds. Additionally, it runs on 4 AA batteries and comes with a case and stand.