Model	SZ650	SZ680	SZ810
Objectives Zoom Range	0.7X-4.5X	0.68X-4.7X	0.65X-5.3X
Zoom Ratio	1：6.5	1：6.8	1：8.1
Field Diameter(mm)	中22	中23	中24
Working Distance(mm)	110	110	110
Stereo Angle()	12	12	12
Viewing Angle()	40	35	35
Inter pupillary Adjustable Distance(mm)	50-75	50-75	50-75
Video Output Distribution	NO	100%(0： 100 standard)
		70：30(optional) (70%for eyepiece， 30%for photography)

SZ 650 Series Objective&Eyepiece Parameter List(0.7x-4.5*)

                                                                     

Additional Objective		0.5X	1X(built-in)	2X
W.D		189mm	110mm	36mm
10X Eyepiece/中22mm	Magnification	3.5--22.5	7--45	14--90
	Field dia.(mm)	62.9--9.8	31.43--4.89	15.71--2.44
15X Eyepiece/中16mm	Magnification	5.25--33.75	10.5--67.5	21-135
	Field dia.(mm)	45.71--7.11	22.86-3.56	11.43--1.78
20X Eyepiece/中12mm	Magnification	7--45	14--90	28-180
	Field dia.(mm)	34.28--5.33	17.14--2.67	8.57-1.33

  SZ 680 Series Objective&Eyepiece Parameter List(0.68x-4.7*)                                                                    

Additional Objective		0.5X	1X(buit in)	2X
W.D		189mm	110mm	36mm
10X Eyepiece/中23mm	Magnification	3.4--23.5	6.8--47	13.6--94
	Field dia.(mm)	67.65--9.79	33.82--4.89	16.91--2.46
15X Eyepiece/中16mm	Magnification	5.1--35.25	10.2--70.5	20.4--141
	Field dia.(mm)	47.06--6.81	23.53--3.40	11.76-1.70
20X Eyepiece/中12mm	Magnification	6.8--47	13.6--94	27.2-188
	Field dia.(mm)	35.294--5.11	17.65--2.55	8.82-1.28

  SZ 810 Series Objective&Eyepiece Parameter List(0.65x-5.3*)                                                                    

Additional Objective		0.5X	1X(built-in)	2X
W.D		189mm	110mm	36mm
10X Eyepiece/中24mm	Magnification	3.3-25.5	6.5--53	13.2-106
	Field dia.(mm)	72.73--9.41	36.92--4.53	18.18--2.26
15X Eyepiece/中16mm	Magnification	4.88--39.75	9.75--79.5	19.5--159
	Field dia.(mm)	49.18--6.03	23.08--3.01	11.53--1.50
20X Eyepiece/中12mm	Magnification	6.5--53	13.2-106	26.4-212
	Field dia.(mm)	39.92-4.53	18.18--2.26	9.09--1.13

                                         

Items		SZ650BP	SZ650B2L	SZ680BP	SZ680B2L	SZ680TP	SZ680T2L	SZ810BP	SZ810B2L	SZ810TP	SZ810T2L
Main Body	Binocular	●	●	●	●			●	●
	Trinocular					●	●			●	●
10X Eyepiece/P22mm		●●	●●
10X Eyepiece/P23mm				●●	●●	●●	●●
10X Eyepiece/P24mm								●●	●●	●●	●●
15X Eyepiece/Q16mm		○○	○○	○○	○○	○○	○○	○○	○○	○○	○○
20X Eyepiece/12mm		○○	○○	○○	○○	○○	○○	○○	○○	○○	○○
0.5X/0.75X/2X Objective		○	○	○	○	○	○	○	○	○	○
Focusing unit		●	●	●	●	●	●	●	●	●	●
No light		●		●		●		●		●
Reflecting 3WLED(DC input)			●		●		●		●		●
Transmitting 3WLED (DC input)			●		●		●		●		●
Black&white Plate		●	●	●	●	●	●	●	●	●	●
Glass Plate			●		●		●		●		●
Arm stand		●	●	●	●	●	●	●	●	●	●
Pillar stand		○	○	○	○	○	○	○	○	○	○
Focusing Arm stand		○	○	○	○	○	○	○	○	○	○
Base(330*300mm)		●	●	●	●	●	●	●	●	●	●
C-mount 0.5X， 0.7X， 1X						○	○			○	○