The N81 cellphone come August 29, this is certainly a great handset that looks set to take on Sony Ericsson’s best in the Walkman series, boasting up to 12.5 hours of music playback time and 8GB of internal memory to store your favorite tunes without running out of space too soon. Features include a 2.4″ QVGA 16 million color display, a 2 megapixel camera, and a VGA camera for video calls. The N81 even supports Nokia’s N-Gage gaming platform, providing up to 4 hours of gaming time per charge. Measurements stand at 102mm x 50mm x 17.9mm, weighing 140 grams.