1. It´s with 4pcs LED lights, PMMA plastic case, rubber anti-slip strap, metal ball core.
2. The size is 7.1cm(dia)*6.0cm(height).
3. It´s durable and portable and with magnet massage. It´s good for health.
4. Your logo is available. We also have other types for your choice. We can do w/o lights and reoffer quotation.