B1 500 Air Battery-Powered 2-Light Location Kit from Profoto consists of two B1 500 off-camera, battery-powered AirTTL flash heads each with a battery, a 4.5A Fast Battery Charger, car charger and a custom location backpack. With the use of an optional Air Remote TTL-C, TTL-N, Air Remote or Air Sync users will have access to wireless triggering from distances up to 1,000'.