Two of them both feature high output, temperature control, absolutely practical, so which one do you perfer?
Power Engine by Smoktech Features: 400W maximum power output; Micro-USB port supports firmware upgrade; 0.96” OLED screen is easy-to-read; Powered by four replaceable 18650 batteries;
Smok Marshal 300W TC Box Mod Features and Specification: Maximum Wattage Output 300W; OLED screen; 510 Connection; Size: 88.5x61.5x29.6mm; Resistance Range: 0.1Ω-3Ω (VW) / 0.06Ω-2Ω (TC); Temperature Range: 200℉--600℉/100℃--315℃; Creative function button
Click here to purchase Smok Power Engine 400W
http://www.vapingbest.com/smok-power-engine-400w-mod-p-693
And to buy Authentic Smok Marshal 300W TC Box Mod
Power Engine by Smoktech Features: 400W maximum power output; Micro-USB port supports firmware upgrade; 0.96” OLED screen is easy-to-read; Powered by four replaceable 18650 batteries;
Smok Marshal 300W TC Box Mod Features and Specification: Maximum Wattage Output 300W; OLED screen; 510 Connection; Size: 88.5x61.5x29.6mm; Resistance Range: 0.1Ω-3Ω (VW) / 0.06Ω-2Ω (TC); Temperature Range: 200℉--600℉/100℃--315℃; Creative function button
Click here to purchase Smok Power Engine 400W
http://www.vapingbest.com/smok-power-engine-400w-mod-p-693
And to buy Authentic Smok Marshal 300W TC Box Mod