Nokia has introduced a series of new handsets that are powered by mobile phones. You can now save some energy by hooking up your handset to your bike, keep pedaling and the phone will get fully charged.

The phones are C1-00, C1-01, C1-02 and C2 – not pretty inventive, right? Anyway, the handsets are expected to become available for purchase at the end of this year. The Nokia C1-00 is the company’s first dual-SIM handset. Don’t worry, you won’t have to pedal harder to use both numbers because the phone does not support dual standby and, in consequence, you can use only one number at any time.

Alex Lambeek, Nokia vice president, clarifies the use of SIM cards: "By simply holding down a key, people are able to switch between SIM cards. This enables them to take advantage of reduced call rates, flexibility when traveling from one country to another, or helps with sharing a phone within a family and still use their own SIM," said Alex Lambeek, vice president at Nokia. "This is a great added convenience feature considering the low price of the phone."

The phones are low-end devices, so let’s see what they have to offer.

The Nokia C1-00 comes with a TFT 65k colors display offering 128 x 160 pixels resolution, FM Radio and a 3.5 mm headphones jack. Battery life is quite impressive keeping in mind that it is powered by your bike. Its Li-Ion 1020 mAh battery offers 13 hours talk time and 48 days stand-by.

The C1-01 comes with a 1.8 inch 65k colors display boasting 128 x 160 pixels resolution. It comes with Bluetooth, USB 2.0 connectivity support and 64MB of internal memory. The phone has a microSD card slot for up to 32GB of additional storage space. Nokia C1-02 has basically the same features.

The Nokia C2-00 is not so different. It comes with a TFT 65k color display with 128 x 160 pixel resolution, microUSB support, 3.5 mm headphones jack, microSD/microSDHC memory slot, and GPRS connectivity support. The phone’s Li-Ion 1020 mAh battery offers 4 hours talk time and 396 hours in stand-by mode.

The phones will come with bike kits that will contain a charger, dynamo and a holder to secure the devices to the bike. The dynamo cuts off at speeds lower than 3mph and higher than 3kph. According to reports, the phones will cost between $36 and $55.