Portable DesignCompact and lightweight FM radio with clip for easy carrying during sports, running, or meetings. Rechargeable BatteryBuilt-in 300mAh polymer lithium battery for extended use without frequent battery changes. Wide Frequency RangeCovers FM 76-108 MHz for access to a variety of radio stations. Multiple Tuning OptionsOffers manual, semi-automatic, and fully automatic station search with 30 preset slots. High-Quality AudioFeatures 40DB signal-to-noise ratio and 6mW maximum output power for clear sound. Specifications: Model: MI03 Frequency Range: FM 76-108 MHz Battery: 300mAh 3.7V polymer lithium battery Reception Sensitivity: 8DB Signal-to-Noise Ratio: 40DB Maximum Output Power: 6mW External Power Supply: DC 5V Maximum Current: 33mA Audio Output: 3.5MM/32 x 2 Preset Stations: 30 Tuning Methods: Manual, Semi-automatic, Fully automatic