Best hidden camera, hidden video spy camera in button 4K DIY 

 DIY 4K Hidden Button Camera Kit w/ DVR - 6/10/31 Hour Battery Options

• 120° Camera: Capture a vast area with the wide-angle camera. The 120-degree lens provides extensive coverage, minimizing blind spots and ensuring you get the whole picture.
• 4K Video Streaming: Stream 4K video in real-time directly to your smartphone. Stay connected and monitor your space from anywhere, anytime.
• 4K Video Quality: Records crystal-clear 1080p HD video, ensuring high-quality footage for accurate monitoring and evidence collection.
• Versatile Recording Options: Choose between motion-activated recording to capture only essential moments or continuous 24/7 recording for full surveillance coverage.
• Loop Recording: Ensures continuous monitoring by overwriting the oldest files when the memory card is full, so you never miss a moment.
• Time and Date Stamping: Keep track of every recorded event with precise time and date stamps on all video footage, ensuring you have accurate information for any situation.