The General Tools Telescoping Lighted 2 x 3 In. Glass Inspection Mirror makes it possible to examine dark, inaccessible areas. Two LEDs—at 2 o'clock and 10 o'clock—spread light evenly over the viewing area. Extra-long telescoping arm. Fully polished, shatterproof glass mirror. 360° double ball joint allows fine angle adjustments. Power source: Two "CR2032" Lithium-ion batteries (included). Mirror dimensions: 2 in. x 3 in. Arm length: 12 to 33 in.