Spotted at my local Kmart after a bender are these Anko Outdoor String lights featuring 26 RGB customisable LED bulbs, IP44 waterproof rating, Google Home/Amazon Alexa support, mains powered and Tuya-based. The first bulb to last bulb length is 5.5m and the power cord is 5m.
You can control them with either the Tuya Smart Life app or by pressing the button on the bottom of the control box.
Can you connect more to the end?