When sourcing Portable DAB Radios, prioritize devices that support DAB+ (Digital Audio Broadcasting Plus), as this is the current international standard offering better sound quality and more stations than older DAB. Ensure the chipset supports FM-RDS as a fallback for areas with weak digital signals. Key hardware specs include a high-sensitivity telescopic antenna, a backlit LCD or OLED display for track information, and a rechargeable Lithium-ion battery with at least 10-15 hours of continuous playtime. For premium markets, look for Bluetooth 5.0 integration and dual alarm clock functions.