1. THRML Active Cooler fits on top of the for 5 to keep it cool while keeping the small form factor 2. Maximize heat dissipation away from the for 5 with the large aluminum heatsink 3. Tunnel Type Radiator heatsink design to maximize with the active cooling from the 30mm PWM blower fan 4. Integrated 30mm PWM blower fan helps cool down the for 5 faster 5. Quick snap on and push pins for easy mounting on for 5 Input voltage:5V DC supplied via four-pin fan header on for 5 Fan speed control:Pulse width modulation control with tachometer Maximum airflow:1.09 CFM Maximum fan speed:8000 RPM +/- 15% Colour:Silver Material:Aluminum alloy Package Contents: 1 x Active Cooler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.