The average life span of those seems to be about 2 years.
The [https://www.pentair.com/en/products/pool-spa-equipment/pool-lighting/globrite_pool_andspaledlights.html GloBrites use a proprietary niche so you're stuck to using them.[1]
If you are planning a pool build Pentair has a new version called the MicroBrite that you should consider.
