SIG Sauer Optics
SIG Sauer ECHO
Specs, variants & prices
SIG Sauer currently makes 10 versions of the ECHO optic. Length runs from 4.96" to 15". SIG Sauer's suggested retail prices run from $2,099.99 to $4,499.99, and stores set their own prices from there. The table below lines up every version so you can compare them at a glance.
What versions of the SIG Sauer ECHO are there?
10 current versions. Specs and measurements are SIG Sauer's own.
ECHO CV25 THERMAL CLIP-ON
—- Model / part #
- SOEC22100
- Magnification
- 1-8x
- Objective
- 25 mm
- Attachment
- QD-LEVER M1913 PICATINNY RAIL
- Overall length
- 4.96"
- Weight
- —
- Finish
- Black
- Details
- Height: 3.07" · Waterproof: IP67 · Battery: (1) 18650 Lithium-Ion
- MSRP
- $4,499.99
ECHO MV35 THERMAL MONOCULAR 2-16X35MM
—- Model / part #
- SOEC42200
- Magnification
- 2-16
- Objective
- —
- Attachment
- —
- Overall length
- 7.0"
- Weight
- —
- Finish
- Flat Dark Earth (FDE)
- Details
- Battery: Internal and 18500 Replaceable External · Waterproof: IP67
- MSRP
- $2,499.99
ECHO MV50-DV DUAL VIEW THERMAL MONOCULAR 1.5-24x25/50MM
—- Model / part #
- SOEC42320
- Magnification
- 1.5-24
- Objective
- —
- Attachment
- —
- Overall length
- 8.1"
- Weight
- —
- Finish
- Flat Dark Earth (FDE)
- Details
- Battery: Internal and 18500 Replaceable External · Waterproof: IP67
- MSRP
- $3,999.99
ECHO MV50-LRF MARINE THERMAL MONOCULAR 3-24X50MM
—- Model / part #
- SOEC42310OR
- Magnification
- 3-24
- Objective
- —
- Attachment
- —
- Overall length
- 7.6"
- Weight
- 19.8 oz
- Finish
- Orange
- Details
- Battery: Internal and 18500 Replaceable External · Waterproof: IP67
- MSRP
- $3,299.99
ECHO MV50-LRF THERMAL MONOCULAR 3-24X50MM
—- Model / part #
- SOEC42310
- Magnification
- 3-24
- Objective
- —
- Attachment
- —
- Overall length
- 7.6"
- Weight
- —
- Finish
- Flat Dark Earth (FDE)
- Details
- Battery: Internal and 18500 Replaceable External · Waterproof: IP67
- MSRP
- $3,299.99
ECHO RQ35
—- Model / part #
- SOEC31200
- Magnification
- 3.5-28
- Objective
- —
- Attachment
- —
- Overall length
- 14.8"
- Weight
- 31.7 oz
- Finish
- Black
- Details
- Height: 3.5" · Maintube: 30mm · Battery: Internal + 1x18500 · Waterproof: IP67
- MSRP
- $2,099.99
ECHO RV35
—- Model / part #
- SOEC32200
- Magnification
- 2-16
- Objective
- —
- Attachment
- —
- Overall length
- 14.8"
- Weight
- 31.07 oz
- Finish
- Black
- Details
- Height: 3.5" · Maintube: 30mm · Battery: Internal + 1x18500 · Waterproof: IP67
- MSRP
- $2,999.99
ECHO RV50-LRF
—- Model / part #
- SOEC32310
- Magnification
- 2.5-20
- Objective
- —
- Attachment
- —
- Overall length
- 15.0"
- Weight
- 34.9 oz
- Finish
- Black
- Details
- Height: 3.5" · Maintube: 30mm · Battery: Internal + 1x18500 · Waterproof: IP67
- MSRP
- $3,999.99
ECHO SV35-LRF THERMAL SIGHT 1.5-12X35MM
—- Model / part #
- SOEC12210
- Magnification
- —
- Objective
- —
- Attachment
- DIRECT M1913 / PICATINNY RAIL
- Overall length
- 10.7"
- Weight
- —
- Finish
- Black
- Details
- Height: 3.5" · Waterproof: IP67 · Battery: (2) 18650 lithium-ion re-chargeable batteries
- MSRP
- $2,499.99
ECHO SV50-LRF THERMAL SIGHT 2-16x50MM
—- Model / part #
- SOEC12310
- Magnification
- —
- Objective
- —
- Attachment
- DIRECT M1913 / PICATINNY RAIL
- Overall length
- 10.7"
- Weight
- —
- Finish
- Black
- Details
- Height: 3.5" · Battery: (2) 18650 lithium-ion re-chargeable batteries
- MSRP
- $4,499.99
How much does a SIG Sauer ECHO cost?
SIG Sauer's suggested retail prices run from $2,099.99 to $4,499.99, depending on the version.
Can you buy one in California or Massachusetts?
SIG Sauer leaves California and Massachusetts blank for this product. Some states limit which accessories a dealer can sell. State rules change, so check our California and Massachusetts pages before you buy.
What's the latest on the ECHO?
Nothing new on the ECHO lately.
Specs from SIG Sauer, checked September 14, 2026 (source). SIG Sauer's site blocks scripted requests, so this table was read from a saved copy of the product page. Spot a mistake? Let us know and we'll fix it. SIG Sauer is a trademark of its owner, listed for identification only. Firearms Almanac isn't affiliated with SIG Sauer.