Specifications: Type: Silver, without BT/OR function, with BT function (optional) 【Without BT function】 Receiving channels: AM / FM / SW1 / SW2 AM: 530 ~ 1600KHz FM: 88 ~ 108mHz SW1: 3.2 ~ 7MHz SW2: 7 ~ 19mHz TF card slot: No Power: Integrated battery 3.7V 1200mAh or 3 AA 1.5V batteries (not included) 【With BT function】 Receiving channels: AM/FM/SW/BT AM: 520 ~ 1600KHz FM: 87 ~ 108mHz SW: 7 ~ 19mHz Bt: Reads Bt TF card slot: Yes Power supply: Integrated battery 3.7 V 2000 mAh or 3 AA 1.5 V batteries (not included) Material: ABS Signal/noise ratio: 60 db Rated voltage: 3.7 V Rated power: 2 W Flashlight: Yes Reading light: 4 LED Output from solar panel: 5 V/40 MA Output from generator: 4 V/400 MA Output from mobile phone charging: 4.2 V/400 MA Patch: headphones: 3.5 mm Integrated speaker: 8Ω 1 W Solar panel size: 98 x 25 mm/3.86 x 0.98 inches Item size: 242 x 138 x 62 mm/9.53 x 5.43 x 2.44 inches Package weight: 700 g/24.69 Oz, 680 g/23.99 Oz Package size: 25.5 x 14.5 x 7.5 cm/10.03 x 5.71 x 2.95 inches Packing list: 1 x radio 1 x USB cable