Yongnuo YN560-IV Speedlite

Mount Shoe Guide No. 190.29' (58 m) ISO100 at 105 mm position Exposure Control Manual Vari-Power Manual: 1/1 - 1/128 Bounce Head Yes, -7° to +90° Swivel Head Yes, 270° Coverage 18 mm - 105 mm (Full frame) Zoom Head Full frame: 24 mm - 105 mm Off Camera Terminal PC Recycle Time Approximately 3 seconds Flash Duration 1/200 - 1/20000 sec Flash-ready Indicator Yes Slave Timing Modes Instant SyncSkip Preflash Wireless Operation Method: RFDistance: Up to 328.08' / 100 m Wireless Communication Channels 16 Channels Wireless Groups 3 Groups Power Source 4x AA Alkaline, Rechargeable NiMH Batteries Dimensions (WxHxD) 2.4 x 7.5 x 3.1" / 60.0 x 190.0 x 78.0 mm