HR320 laser receiver has a 5 channel LCD directional arrows on the front and back and two on-grade sensitivity settings Two on-grade sensitivity settings - fine and coarse - meet various jobsite requirements Includes a C59 rod clamp with a snap-in feature for quick switching between rod mounted and handheld job applications. The on-grade position aligns with the top edge of the clamp. Loud 100 decibel speaker is designed to be heard on noisy construction sites and has three adjustable speaker levels - loud, low, and off Receiver’s housing and battery compartment are IP67 waterproof, protected against moisture and dust, and tool withstands drops up to 5 ft (1.5 m), Weight: 1.3 Pounds, Manufacturer: Spectra Precision Lasers