What reverb did Eddie Van Halen use?

I'm curious, could you elaborate on the specific reverb technique that Eddie Van Halen famously utilized in his guitar playing? As a guitarist myself, I'm always looking to expand my knowledge of sound manipulation and I've heard that his use of reverb was quite innovative. Was it a particular type of reverb effect? Did he employ any specific hardware or software to achieve his signature sound? Or was it a combination of factors that led to his distinctive tone? I'm eager to learn more about the techniques that helped shape his legendary status in the music industry.