In the lower right corner of the crystal is a very tiny area which contains the ambient light sensor. The sensor implementation optimizes battery life. The online WIS community dislikes butterfly clasps. Their kvetch? Butterfly clasps don’t tend to offer micro-adjustments and they’re more tedious to secure on the wrist. All Hamilton quartz movements are produced in accordance with Hamilton's typically high quality standards and manufacturing methods. Environmental temperatures can affect the accuracy of quartz movements, leading to deviations of -0.5 to +0.7 seconds per day.

A few months ago, visiting a local jewelry store for a Breitling service, I spotted a Hamilton PSR in a display case. (Who knew you could go out and see watches in the flesh?) It felt like a well-made piece; the build quality was evident. My inner 10-year-old hankered after the LED display. Bracelet: The PSR has a Stainless-Steel 24mm (0.945”) bracelet, tapering to 16.0mm (0.630”) at the clasp, and the clasp is the “Butterfly” folding type with a release button on each side. The bracelet appears to be of good engineering and build quality. This was probably one of the most unique, technically advanced and modern watches to appear in a Bond film. Audiences must have been amazed by the digital electronic wrist computer watch, at a time when computers still were the size of a large room. Watch Weight: A PSR with all links weighs ~5.0 oz. / ~0.3125 lb. / ~141.7g. With nine links removed for my need, it weighs~ 4.0 oz. / ~0.25 lb. / ~113.4g. [ALL APPROXIMATE as the weigh scale implemented does not have great resolution at these lower weights.] My Hamilton Digital Quartz PSR model H5241430 (1970’s PULSAR tribute) was obtained on October 08, 2021, from a local JARED GALLERIA dealer, at a nice discount.My first impression: the Hamilton PSR is quite the chunky monkey. I immediately noticed the PSR’s resemblance to Hershey’s nuggets. Sweet!

The LCD is used during the day, and depending on lighting, the watch may need to be tilted slightly for best contrast. In dimmer lighting, a momentary press of the button lights the OLED dots display (L.E.D.’s) for four seconds.

Hamilton PSR

If you desire to resize the PSR bracelet yourself, do it in the center of a large towel so that the small pins and sleeves will not roll away to be lost on a floor or carpet. Just take great care! The parts should not ‘go flying’ during removal. The new Hamilton PSR looks precisely like its vintage counterpart. The name on the case needed to be changed and the size also adapted to modern standards. We have a 40 x 35mm case here in either steel (standard model) or gold PVD coated steel (limited edition). The bracelet looks like all those other iconic ones we are used to seeing on our favorite vintage chronographs. You know, the 1171s or the 1162s. Hamilton has recreated the watch in virtually the same case design and cool red digits, but with modern and more energy efficient screens to get that effect.