Subtle and unique, the San Bernardino black tungsten carbide band instills an atmosphere of mystery. The ebony color of the black tungsten is accentuated by the matte finish. This allows the ring to reduce reflection thus creating a one of a kind ring without drawing too much attention. These black tungsten rings are guaranteed for life; this ring will never tarnish or fade. Ships within 1 business day. Free Lifetime Warranty and Lifetime Sizing; pay no restocking fees or deductibles!