inputs.text: purchased airsoft guns not work - purchased itehem accurately chronograph airsoft guns hope gather information use verify guns within spec certain game types unfortunately yet able get chronograph register data experience itehem within home outside porch trying variety lighting conditions light shade dark shade indirect light direct light near far varying heights without diffusers still not able get anything systehem continuing look different lighting conditions ways facilitate functionality chronograph would say point pretty disappointed would thought cost itehem nearly 12000 would put position get solid simple device not case likely return itehem try different brand function reliably would advise looking use airsoft exercise caution considering itehem based reviews clearly works certain conditions not worked