1.L5B83G Upgraded Version: This voice remote is L5B83G upgraded version, it can replacement original models for Insignia/Toshiba TV remote controls: NS-RCFNA-19, NS-RCFNA-21, CT-RC1US-19, CT-RC1US-21, L5B83G voice remotes, etc 2.Broad Compatibility: Compatible with most Fire's smart TV and streaming media players, and smart TVs with FireOS TV built-in.(Compatible with Insignia, Toshiba, and Omni Series smart TVs with FireOS TV built-in.). Compatible with Firestick Lite, Firestick (2nd Gen and later), TV Stick 4K (1st Gen and later), TV Stick 4K Max (1st Gen and later),TV Cube (1st Gen and later) and FireOS TV (3rd Gen, Pendant Design) 3.Not compatible with Fire's TV (1st and 2nd Gen), TV Stick (1st Gen), Element FireOS TV Edition, Insignia HD/Insignia FHD, Hisense U6HF 4K ULED FireOS TV Series, or E-cho show 15 4.Advanced Voice Control: Enjoy the ease of voice commands using this remote; simply press the microphone button and say what you want 5.4 Shortcuts Buttons: Reach your favorite content in a flash with preset app buttons