Plastic Logic shows off colour e-paper display smart watch concept: the future of wearable tech? - photo 1Plastic Logic shows off colour e-paper display smart watch concept: the future of wearable tech? - photo 2Plastic Logic shows off colour e-paper display smart watch concept: the future of wearable tech? - photo 3Plastic Logic shows off colour e-paper display smart watch concept: the future of wearable tech? - photo 4Plastic Logic shows off colour e-paper display smart watch concept: the future of wearable tech? - photo 5