Many RCA clock radios support dual-wake (two separate alarms) and let you choose alarm types (buzzer or FM) and set alarms for specific days of the week.
Yes. Several models include a built-in USB port for overnight charging and explicitly note support for smartphones, eReaders, and most tablets.
Options range from fully portable battery-powered radios (one model uses 4 AAA) to compact bedside units that run on AC power with a backup battery option (some models require 2 AAA). Many designs emphasize compactness for nightstand or desk use.
Common inputs and outputs include a headphone jack, an aux input for external music sources, and built-in USB ports for charging devices.
Most models include a snooze button and sleep-timer functions, and some also provide nap timers or additional sleep/nap timing options.