Strobe by Techno - 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. 9 functions. Scan QR code on box for APP download. - Product Dimensions: 6.6 cm x 5.8 cm x 3.8 cm - Product Material: Silicone