The RTS2 uses a CR2032, lithium battery that is contained within a removable battery tray which permits battery replacement without dismounting the sight; this eliminates the need for re-zeroing when replacing a battery. The RTS2 has a new 10 position push button manually operated intensity switch and is equipped with a removable Picatinny / Weaver Rail Mount so the sight can be rail mounted or used in direct mounting applications. The RTS2 will also accept most STS dovetail kits, rail mounts, and scope ring mounts.