Features 1. Large screen: Innovative 4.3 hour large screen display design, subverting old radios and leading the new trend of full band radio reform. 2. Strong signal: An external extended frequency receiving antenna (about 53 centimeters) enhances the effect of the radio channel, and the campus broadcast frequency band (70-108NHz). 3. Exquisite design: One handed grip, unique portable design, weighing only 350g, ergonomically designed, comfortable grip. The humanized hanging rope design makes outdoor activities less likely to fall off, making travel convenient. 4. Bluetooth version 5.0: Bluetooth version 5.0 has stronger signals, more stable transmission, and is not limited by cables, enjoying an effective distance of 10 meters. 5. Support USB and TF playback: First, download the songs, videos, pictures, and e-books to the USB drive, then insert the USB drive/TF into the corresponding slot to play. Specification Product model: F50 Speaker configuration: 2.5-inch internal magnetic speaker Rated power: 5W Frequency response: 100Hz-18KHz Bluetooth version: 5.0 Battery usage: 18650 lithium battery (1200mAh x3) Input power supply: DC 5V/1A Body dimensions: L162.6 x W33.5 x H88.9mm Basic functions: BT/TF/USB/Digital song on demand/Lossless music playback/Video/Medium wave/Short wave/Menu/Back button/Channel adjustment function. Basic functions: radio support for campus broadcasting/Frequency range: 70-108MHz, headphone jack/volume knob Material: Plastic Color: Military Green, Grey Product size: 16.3 x 8.9 x 3.35 cm Packing size: 22 x 13 x 6 cm Weight: 578 g Package Include: main engine Type-C interface charging cable 18650 lithium battery/(12000mAh x3) Hanging rope instructions Warranty Card Certificate of conformity