![File:Vintage Regency TR-1 Transistor Radio, Mahogany Color, 4 Transistors, Made in USA (9804504753).jpg - Wikimedia Commons File:Vintage Regency TR-1 Transistor Radio, Mahogany Color, 4 Transistors, Made in USA (9804504753).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/2c/Vintage_Regency_TR-1_Transistor_Radio%2C_Mahogany_Color%2C_4_Transistors%2C_Made_in_USA_%289804504753%29.jpg)
File:Vintage Regency TR-1 Transistor Radio, Mahogany Color, 4 Transistors, Made in USA (9804504753).jpg - Wikimedia Commons
Dr. Innov8tion - The Regency TR-1 was the first commercially manufactured transistor radio which was released in 1954. It allowed listeners to take music with them, as the radio was now small
![File:A Factory Repaired Regency TR-1 Transistor Radio With A TR-1G Case, Repair Label Dated July 30, 1962 (22320397563).jpg - Wikimedia Commons File:A Factory Repaired Regency TR-1 Transistor Radio With A TR-1G Case, Repair Label Dated July 30, 1962 (22320397563).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/72/A_Factory_Repaired_Regency_TR-1_Transistor_Radio_With_A_TR-1G_Case%2C_Repair_Label_Dated_July_30%2C_1962_%2822320397563%29.jpg)
File:A Factory Repaired Regency TR-1 Transistor Radio With A TR-1G Case, Repair Label Dated July 30, 1962 (22320397563).jpg - Wikimedia Commons
![File:Vintage Regency TR-1 Transistor Radio With A Clear Case (Likely For Demonstration Purposes), Has A TR-1G Serial Number But A TR-1 Tuning Dial (22881158556).jpg - Wikimedia Commons File:Vintage Regency TR-1 Transistor Radio With A Clear Case (Likely For Demonstration Purposes), Has A TR-1G Serial Number But A TR-1 Tuning Dial (22881158556).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/5/58/Vintage_Regency_TR-1_Transistor_Radio_With_A_Clear_Case_%28Likely_For_Demonstration_Purposes%29%2C_Has_A_TR-1G_Serial_Number_But_A_TR-1_Tuning_Dial_%2822881158556%29.jpg)
File:Vintage Regency TR-1 Transistor Radio With A Clear Case (Likely For Demonstration Purposes), Has A TR-1G Serial Number But A TR-1 Tuning Dial (22881158556).jpg - Wikimedia Commons
![Regency TR-1 - World's first transistor radio, with case, early example 1954 - collectornet.net - YouTube Regency TR-1 - World's first transistor radio, with case, early example 1954 - collectornet.net - YouTube](https://i.ytimg.com/vi/kHNawLLoyWk/maxresdefault.jpg)