K [Voice Communication]
Z - Y - X [Radio Terminology]
V+- V- [Tuning The Volume]

Convenient and efficient design enables user to get in touch with teammates and other players in the shortest time.

2. Moving key:

W - S - A - D [forward - Reverse - Left - Right]
Ctrl [Squat]
Shift [Muffler Walking]
Space [Jump]

Unique key structure layout enables players to control their direction more accurately and to enable actions to be more agile.

3. Purchasing key:

O - B [Purchasing Menu]
< - > [Purchasing Ammunition]
0~9 [Purchasing Items]

Convenient key layout dramatically accelerates the players' purchasing speed using one hand.

4. Auxiliary keys:

Q [Switch Arms]
E [Bring Hostage - Switch - Dismantle Bomb]
R [Load Bomb]
F [Flash Light]
G [Throw Away Arms]
T [Spurt Personal Symbol]
N [Night Viewing Apparatus]
H [Help]
M [Select Crew]
~` [Console]
Alt [User-defined]
Tab [Achievement Column]
Esc [Quit]

Individual settings can be reconfigured according to particular player preferences.