No TTL. No remote power control. Manual power adjustment down to 1/64. 360 degree swivel head, plus 90 degree vertical movement. GN 140, ISO 100 (this is just about exactly what a 430EX II puts out). Dual tripod mounts (flash base + bracket) if you are keen on tripods rather than light stands. The bracket allows an additional 360 degree rotation on the Y-axis, giving you just about supreme maneuverability. Total cost including Cactus V4 Receiver: $50-$60 USD.