Sig Sauer Optics Thermal Reflex Sight Echo3 1-6x23mm with QD Mount The Echo3 Thermal Reflex Sight is the most innovative, direct view thermal sight in the world. It uses Sig's BDX technology and can record both video and images in 11 different color palettes. Features: - BDX Enabled Wifi / Bluetooth - Allowing Active Reticles That Change with Kilo Rangefinder Input - Customizable Fixed Reticles from BDX Mobile App - 10 Degree FOV - Video / Image Recording With 8 Color Palettes - Levelplex Anti-Cant System - Uncooled 320x240 12um VOX LWIR Core Operating at 30 Hz Specifications: - Type: Thermal Reflex Sight - Magnification: 1-6x - Objective: 23mm - Resolution: 1-6x23mm - Field Of View: 10 degrees - Battery: CR123A - Mount Type: QD - Dimensions: 4.30" L x 2.60" W x 3.30" H - Weight: 14.30 oz