Description: Assembled Mini Digital FM Radio Tesla Coil Kit for Kids DIY Projects Ordinary 3.5mm diameter stereo headphones can be used It can keep the radio working for about 8 hours; Charge the battery frequently when using it It is convenient to install, efficient; Beautiful and new design Suitable for beginner, student experiments, curriculum design and so on Specification: 1. Compact appearance and novel shape 2. High sensitivity, low noise and strong anti-interference ability 3. Support global frequency band (76-108mhz) 4. built-in rechargeable lithium battery and charging circuit, can be charged with a mobile phone charger 5. With work indicator (blue), charging indicator (red) and full indicator (blue) 6. Operating voltage: 3.7v-4.2v; Battery capacity: 250mah Size Chart: Size(LxWxH): 80x70X33mm / 3.15x2.76x1.3inch Package Includes: 1 Piece Mini Digital FM Radio Kit Note: Due to the manual measurement, please allow 1-2mm differences in size Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand