Insignia - 24" Class (23.6" Diag.) - LED -720p - Smart Insignia - 24" Class (23.6" Diag.) - LED -720p - Smart - Roku TV. Model: NS-24ER310NA17. Insignia NS-24ER310NA17 LED Roku TV: This smart TV puts thousands of streaming apps and services, including Netflix and Hulu Plus, at your fingertips with an easy-to-use remote. See user manual or contact us for more information. Applies to product Insignia - 24" Class (23.6" Diag.) - LED - 720p - HDTV Upgrade your home entertainment system with this 24-inch Insignia LED TV. It provides 720p resolution to support crisp, vivid images, and a 60Hz refresh rate for consistent response. This Insignia LED TV's DTS sound technology ensures crystal clear audio and impressive bass resonance, and it's energy-efficient to save you money.