Our equipment kit includes an FM radio, a digital voice recorder, and 2 LED light-up cat balls (all batteries included), providing a versatile set of tools for your exploration. The dual-channel digital voice recorder features 8GB memory, sufficient for extended use, and includes a built-in 300mAh rechargeable battery that supports up to 36 hours of continuous recording. It supports multiple recording formats including MP3 and WAV, and playback formats such as FLAC, APE, MP3, and WAV. Use the handheld FM radio to scan frequencies; it is designed to detect electromagnetic fields ranging from 50 Hz to 20,000 Hz. It can measure both electric and magnetic fields simultaneously, allowing you to monitor field activity in any lighting condition. Designed for ease of use, this equipment requires no special skills. Whether using the FM radio, digital voice recorder, or light-up cat balls, you can quickly begin exploring your environment and enhance the efficiency of your investigation. Color: As Shown Material: Plastic Package Contents: 1 set * spirit box Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.