Strobe by Techno G?? a vibrating cock ring that can be operated with a downloadable APP or by itself. Made from premium materials, Strobe is rechargeable, water resistant, and suitable with all lubricants. Scan QR code on box or instruction booklet for APP download. Product Material: Silicone / ABS IPX Rating: IPX6 Charger Type: Pin # of Speeds: 3 # of Functions: 6 Total Modes: 9