测距仪中参数有一个E.S.P.是什么意思??

Magnification x Obj Lens: 6x 21mm Range: 5-1000 yds Rain-Guard HD: No Water/Fog Proof: Yes Weight: oz/gr：6.6/187 BatteryType: 3-Volt CR2 (included) E.S.P.: No Rangefinder Targeting Modes: Scan， Bullseye， Brush Rangefinder ARC Modes... Magnification x Obj Lens: 6x 21mm Range: 5-1000 yds Rain-Guard HD: No Water/Fog Proof: Yes Weight: oz/gr：6.6/187 BatteryType: 3-Volt CR2 (included) E.S.P.: No Rangefinder Targeting Modes: Scan， Bullseye， Brush Rangefinder ARC Modes: Bow/Rifle 这一款测距仪的参数，其中就是E.S.P.: No跟Rangefinder Targeting Modes: Scan， Bullseye， Brush这两个不是很明白，求砖家解释！！！