Godox AD20O Outdoor / Indoor Battery Flash Light

Maximum watt/seconds 200 compatibility ttl with canon, nikon, sony cameras with optional x1-c, x1-n, and x1-s transmitters ttl with olympus/panasonic, fuji cameras with optional x1t-o and x1t-f transmitters control manually on unit via x1 transmitter which will wirelessly control: flash mode: ttl, manual, multi (stroboscopic), power level modeling lamp on/off, beeper on/off first and second curtain sync, high speed sync guide number at full power: speedlite flash head: 170.6' (52 m) iso 100 @ 35 mm bare bulb flash head: 197' (60 m) iso 100 with ad-s2 reflector @ 28 mm color temperature 5600k (+/-200k) recycle time 0.01 to 2.1 sec flash duration speedlite flash h: 1/220 to 1/13,000 sec bare bulb flash h: 1/220 to 1/11,300 sec flash variability 8 steps: 1/128 to 1/1 flash delay yes, 0.01 to 30 sec flash modes ttl, manual