Features: 
Compatible wireless TTL system: Fully support Canon E-TTL II, Nikon i-TTL and other TTL systems in Godox 2.4G wireless X system.Workable as master or slave unit in a wireless flash group, great for light control and effect. 
Build-in 2.4G wireless transmission: with all-in-one functions and 100meters further tramsmission with X1 TTL wireless flash trigger. 
Studio quality light: Power up to 360W/s, GN 80(m ISO 100 with AD-S2 standard reflector) 
Precise Output: Power adjusts in 1/3 stop increments over wide range (full power to 1/128) 
Plug type bare bulb: Replaceable and detachable bulb design, easy for storage and carrying. 
Stable color temperature: 5600+/-200K over the entire power range. 
Powerful power supply: Drawing from external power pack (PB960: 11.1V 4500mAh)When use with X1 trigger, can wireless remote control flash TTL, power ratio, AF-assist beam and buzzer, and realize flash sync triggering. 
Portable and lightweight even with power and accessories. 
Advanced Functions: Incl. Multi Flash, Focus assist beam on/off & High-speed sync triggering. 
Large dot-matrix LCD display for clear indication and convenient operation. 
Wide-range accessories to choose: Softbox, beauty dish, snoots, color gels, etc. Flash head attaches to small-mount accessories easily. 

Godox Propac PB960 Battery Pack: 
Battery Type: Lithium battery (11.1V/4500mAH) 
Battery charging time: Approx. 3 hours 
Flash Recycling time: Approx. 2.6 second (full power) 
Flash time: Approx. 900 times (full power) 
Weight: 540g