6
OTS-HD 384
1.25 - 5x
OTS-HD 384
2 - 8x
OTS-HD 384
4.5 - 18x
OTS-HD 384
9 - 36x
OTS-HD 640
1 - 10x
OTS-HD 640
1.5 - 15x
OTS-HD 640
2.5 - 25x
OTS-HD 640
5 - 50x
3D Gyroscope
Yes, GS7
3D Accelerometer
Ye
s
3D Magnetometer
Ye
s
E-Barometer
Ye
s
E-Compass
Ye
s
Smooth Zoom
Ye
s
Batter
y life (Li-ion)
8 hr
Batter
y type
4 AA (Lithium Recommended)
Optional accessories
External Bat
tery P
ack
Dimensions
6.
85
”×
3.1
6”
×3
.14
”
17
4×
80
.2
6×
80
m
m
8.
81
”×
3.1
6”
×3
.14
”
22
4×
80
.2
6×
80
m
m
10
.6
7”
×3
.9
7”
×3
.4
7”
27
1×
10
1×
88
m
m
6.
85
”×
3.1
6”
×3
.14
”
17
4×
80
.2
6×
80
m
m
8.
81
” x 3
.16
” x 3
.14
”
22
4×
80
.2
6×
80
m
m
10
.6
7”
×3
.9
7”
×3
.4
7”
27
1×
10
1×
88
m
m
Weight
1.55 lb / 0.68 k
g
1.85 lb / 0.84 k
g
2.75 lb / 1.24 k
g
1.55 lb / 0.68 k
g
1.85 lb / 0.84 k
g
2.75 lb / 1.24 k
g
W
arranty
3 years
Human Detection Range
625
800
1500
2500
625
800
1500
2500
Human Recognition Range
280
400
600
1100
280
400
600
1100
Human Identification Range
170
250
360
600
170
250
360
600
* A
TN
r
e
se
rv
e
s th
e r
ig
h
t t
o c
h
a
nge
th
e a
b
ov
e sp
e
ci
fic
ati
o
n
s a
t a
ny
ti
m
e w
itho
u
t n
otic
e
