Over the past year or so, Lenovo's smartphone strategy has been to build devices, like the Vibe Z2 Pro and others, with impressive specs and interesting features designed to appeal to the casual photographer. Its latest offerings unveiled today at IFA 2015 in Berlin are no different, with the new Vibe P1 sporting a huge 5,000 mAh battery and the Vibe S1 boasting the first dual selfie cameras.

That massive battery on the P1 doesn't just keep the 64-bit Android phone going for more than three days per charge, it can also be tapped to charge other accessories like Bluetooth headsets. You won't have to wait around forever for that battery to juice up, either – Lenovo's version of quick charging, dubbed "rocket charge," allows you to add a claimed 2.8 hours of talk time from just 5 minutes plugged into an outlet. Another interesting power saver feature is a physical switch that instantly turns on a power saving mode that can provide up to twice the regular battery life, according to Lenovo.

The P1 body is all metal and Gorilla Glass 3 and incorporates a home button fingerprint scanner for easy and secure unlocking.

Other key specs include a 64-bit Snapdragon 615 1.5 GHz Octa-core processor, a 5.5-inch IPS Full HD display, 2 GB RAM, microSD slot, 13 MP rear auto-focus camera and 5 MP selfie cam.

The Vibe P1m takes things down a notch with a 4,000 mAh battery that's still nothing to sneeze at, and it also gets quick charging, the physical power saver switch and the ability to charge other accessories.

The smaller, 5-inch phone has a 1280 x 720 IPS display, and 64 bit quad-core 1.0 Ghz MediaTek processor with 8 MP and 5 MP rear and front cameras, respectively.

Neither phone will be available in North America, but will launch in Lenovo countries in the middle of this month for the $159 Vibe P1m and in October for the $279 Vibe P1.

Rounding out Lenovo's new introductions is the Vibe S1, which features a novel gimmick for the selfie-obsessed. This 5-inch phone rocks two front-facing selife cameras side-by-side. An 8 MP primary shooter aims to take the sharpest photos while a 2 MP secondary camera concerns itself with analyzing the depth of field. This allows you to play with the background and foreground subject in a shot or to cut people out of selfies and paste them onto another background. No matter where you are, you can always be at the beach in your selfies.

The S1 is also compatible with Lenovo's selfie-flash and it has a regular old 13 MP rear camera for capturing more outward-focused moments.

The Vibe S1 is also distinguished by its curved glass back for a better hand feel ... for selfies, of course.

Other key vitals include a 64-bit Octa-core 1.7 GHz MediaTek processor, 3 GB RAM, microSD slot, 2,500 mAh battery and a full HD IPS display.

The Vibe S1 goes on sale in countries where Lenovo phones are sold in November starting at $299.

Product page: Lenovo

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