pinhole spy - generally arond the £100-£150 for a reasonable quality with the backend aswell. 1x2" disp...dont know
processor, they are ASIC's (look it up) thus VERY VERY expensive to make 1, but VERY VERY cheep to make 1,000,000,000,000.
what you more want is a small computer like a PDA to cover processing and screen. otherwise you wont get it compatible
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