Price / performance ratio is ok. 1280x960 pixel video is in my opinion a bit exaggerated, it would have done less. Me the manual in Chinese and English, I could unfortunately nix begin. Had some time to try out what those buttons actually good and the individual features of this clock are. Disturbing the constant clicking sound is every second for video and sound recordings. Clock was easily recognized under WinXP and Vista, I have connected using the supplied USB connection cable. All in all, one can be satisfied with this HD 4GB Spycam Watch.