FIIO RR13 Portable FM Radio, Rechargeable Pocket Radio with Built-in Speaker, Analog Tuning Dial, FM 76-108MHz Reception, Replaceable Battery and External Antenna Silver

Specifications:

Compact Size, Surprisingly Big Sound Despite its pocket-sized design, RR13 features an ultra-slim five-magnet speaker system powered by dual amplifier circuits, delivering clear vocals and room-filling FM radio playback.
Professional FM Radio Receiver Powered by the Silicon Labs Si4831 radio receiver chip, RR13 supports both 76–90MHz and 87–108MHz FM bands for broader station coverage, stronger reception, and more stable tuning performance.
Enhanced Reception with Dual Antenna Design A custom internal antenna works together with earphones or the included external telescopic antenna to improve sensitivity and help capture more stations with greater signal stability.
Rechargeable & Replaceable Battery Powered by a rechargeable 450mAh protected lithium battery. Enjoy approximately 7 hours of headphone listening or 4 hours of speaker playback, with the flexibility to carry spare batteries for extended use.
Sleep Timer for Convenient Listening Choose between 30- or 60-minute automatic shutoff modes, making RR13 ideal for bedtime listening while helping conserve battery life.
Smooth Analog Tuning Experience An upgraded wheel-and-gear tuning mechanism delivers precise and satisfying analog station tuning, making it easier to lock onto your favorite FM stations with confidence.