Promaster FTD 7000M Motorized Zoom Flash - MAXXUM Guide Number: 138 (ASA 100, 105mm) TTL Auto Range: 2-99' (ASA 100) Power Source: 4 AA Alkaline Batteries or Promaster Rechargeable NiMH Batteries Recycle Time: 0.3-10 Seconds Angle of Coverage: 78 H 60 V