Amazon.com: iPhone 6 Plus Case,ULAK® [Lumenair Series] Apple iPhone 6 Plus Case LED Incoming Call Blink Flash Hybrid Cover Case For iPhone 6 Plus (5.5) Inch (Golden/Water Red): Cell Phones & Accessories

Amazon.com: iPhone 6 Plus Case,ULAK® [Lumenair Series] Apple iPhone 6 Plus Case LED Incoming Call Blink Flash Hybrid Cover Case For iPhone 6 Plus (5.5) Inch (Golden/Water Red): Cell Phones & Accessories

$7
shop on amazon.com

Might not be exact but very similar

As seen in
  • phone cover neon case neon light bright iphone case phone cover