They are called the Pixel360, distributed in the USA by Vivid RGB lighting.
They are inline pixels, visible from all directions. Perfect for a megatree - straight lines and evenly spaced at connections. Upto 3 strings from one power connection & fully modular & connectorized cables.
Available in 3 different diffusion options and wire colors.
Custom strings built to your specs in 6-8 weeks.
The Pixel360 includes features exclusive to Vivid RGB Lighting - not used in the installation shown.
They also have an 18 month warranty - which should cover two seasons if you buy them in the fall.
Vivid also has a new custom designed product, the PIXY - designed specifically to be attached to steel light frames, or other structures. It's your favorite 8mm LED in a housing that is ready for the weather!
And a Super Bright pixel, the Chip3, with 3 LEDS and if you really want some punch - a 6 LED module!
On track for later this year, a 2.5", 4" & 6/7" ball strings.