That's mine, and at only $59.99 that is a steal.
Funny when I went to the site it said 400w for $59.99.
That is a great deal, I must have paid $89.
The small one plug version is only 75W.
I am not an electricity pro but my Apple Power Adaptor (Yo-Yo version) states that it is a 45W, so the small one should work.
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Motomaster Eliminator 75 Watt Power Inverter
ONLY $29.99
Household power anywhere!
One household outlet provides a maximum 75 W of power
Converts 12 V DC battery power to 120 V AC household electrical power so you can operate products from your car, truck, boat, SUV or RV
Solid state control circuits provide a maximum 75 W of power, 150 W of surge capacity and 60 W continuous power.
Auto shutdown protects against overload, short-circuit, over temperature and low and high battery condition.
Adjustable lighter plug to accommodate different lighter socket sizes
Internal fuse can be replaced by user in the event of overload
This Motomaster product carries a two year guarantee against defects in workmanship and materials
For technical help and information, call 1-800-670-0707