The first wireless locator of the world to offer range up to 28 meters with strong against noise and high accuracy. ItÆs easy to use with lower price and good service . Gl-system-700 receiver System freq :30khz/12khz/1khz Batteries :6 c-cell off shelf batteries/rechargeable battery Battery life :18/10 hours continuous operation Display :industrial rated lcd graphic display Telemetry :5 channels of license free radio. Range up to 600m Dimensions :28cmx33cmx76cm Water proof :ip65 Gl-system-700 display Power :6 c-cell off shelf batteries Battery life :18 hours continuous operation with 6 c-cell batteries Display :industrial rated lcd graphic display Telemetry :5 channels of license free radio with range up to 600m Dimensions :18cmx14cmx22cm Water proof :ip65 Gl-system-700 transmitter Transmitting freq :30khz/12khz/1khz Batteries :2 c-cell off shelf batteries. Battery life :13 hours continuous operation. Range :up to 28 meters depth. Roll :1-12 clock position with half hour resolution. Pitch :0.1% resolution. Temperature :under 85 centigrades Weight :0.68 kg Dimensions :standard Water proof :ip67 Packing in plastic case 85cm*45cm*22cm 6.2kg