1.D1705
Features:
First YN300W TTL Strobe Studio Flash Speedlite Light.
IGBT precise control.
Supoort manual and TTL mode.
Supports slave flash via wireless optical transmission.
Supports S1 and S2 slave flash.
Triggers through sync interface， hot-shoe stand and light control.
Adjusts flash power quickly with stepless knob.
Support first curtain sync and second curtain sync.
Support FEC and FEB.
Upgrade fireware though USB.
Support modeling light proportional mode， sync mode and custom mode.
Multiple protection mechanism.

Specifications:
Type: Studio Flash YN300W
Flash power: 300WS
GN: ISO-100 58M
Fuse: 250V T6.3A
Flash color temperature: 5500K~6700K
Supply voltage: AC185~AC265V 50Hz
Power regulation: 1/1-1/128
Guide No.: ISO-100 56M
Recycling time: 0.1~0.6sec.
Flash duration: 1/33000s~1/800s
Modeling lamp bulb: E27 220V 150W
Modeling flash: sync mode， ratio mode， custom mode， modeling light off mode
Flash mode: ETTL， M， Canon optical transmission wireless triggering， S1， S2
Trigger method: via sync interface， hot-shoe stand or light control
External interface: hot-shoe， PC terminal， USB terminal
Package size: 50 * 26 * 22cm / 19.7 * 10.2 * 8.7in
Package weight: 4.4kg / 9.7LB

Package List:
1 * Studio Flash(reflector not included)
1 * Lamp
1 * Charger

2.D1706
Features:
Reflector is design for Yongnuo YN300W Studio Flash.
Randomized reflective inner surface removes "hotspots" as light scatters around the inside.
Locks quickly into position and carries easily.
Throws clean and diffused light over longer distance.

Specifications:
Interface diameter: 21cm / 8.3in
Item size: 14  *  21m / 5.5 * 8.3in
Package size: 26 * 26 * 20cm / 10.2 * 10.2 * 7.9in
Package weight: 848g / 1.87LB

Package List:
1 * Reflector(Flash not included)
Note:
This item only includes the Reflector.