Some cases bring battery backup with them, others are waterproof. One or two allow you to charge your iPhone with energy from the sun.
The SLXtreme 5 rattles off an impressive set of attributes: It’s waterproof to six feet, has auxiliary power from a 2300 mAh battery (just about as big as iPhone case batteries get), and a backside solar panel for emergency power.
The iPad version of the case is waterproof to the same depth, but carries an absolutely massive 10200 mAh battery and forgoes a solar panel — probably because a small panel wouldn’t gather enough energy in a week to make an iPad even twitch, and a large panel would be too cost-prohibitive. The case will be compatible with all iPads from the 2 forward.
Just like the Lifeproof cases, Snow Lizard is going to augment the SLXtreme cases with a supporting cast of accessories, like a bike mount, belt clip and chest mount; not quite as complete an accessory list as the Lifeproof line, but not a bad start.
Both the iPad case and the iPhone 5 case will be available this fall, with the iPhone 5 version priced at $130 and the iPad version costing $150 (with integrated battery) or $100 (without).