# Kowa TSN-99A Prominar vs Leupold SX-4 Pro Guide HD 20-60x85mm: specs and price compared

A sourced, side-by-side comparison of the Kowa TSN-99A Prominar (Kowa) and Leupold SX-4 Pro Guide HD 20-60x85mm (Leupold) among spotting scopes. Leupold SX-4 Pro Guide HD 20-60x85mm is the cheaper of the two at $999.99.

## Side by side

| Spec | Kowa TSN-99A Prominar | Leupold SX-4 Pro Guide HD 20-60x85mm |
| --- | --- | --- |
| US price | $4499 | $999.99 |
| Brand | Kowa | Leupold |
| Objective lens (mm) | 99 | 85 |
| Magnification range | 30-70x | 20-60x |
| Glass type | fluorite | HD |
| Viewing angle | angled | angled |
| Field of view ft1000yd | 105 | 91.7 |
| Close focus (ft) | — | 22 |
| Eye relief (mm) | 17 | 19 |
| Waterproof | Yes | Yes |
| Nitrogen purged | Yes | Yes |
| Length (in) | — | 17.7 |
| Weight (oz) | — | 78.2 |

## Key differences

- Objective lens (mm): Kowa TSN-99A Prominar 99 vs Leupold SX-4 Pro Guide HD 20-60x85mm 85
- Magnification range: Kowa TSN-99A Prominar 30-70x vs Leupold SX-4 Pro Guide HD 20-60x85mm 20-60x
- Glass type: Kowa TSN-99A Prominar fluorite vs Leupold SX-4 Pro Guide HD 20-60x85mm HD
- Field of view ft1000yd: Kowa TSN-99A Prominar 105 vs Leupold SX-4 Pro Guide HD 20-60x85mm 91.7
- Eye relief (mm): Kowa TSN-99A Prominar 17 vs Leupold SX-4 Pro Guide HD 20-60x85mm 19

## Sources

- Kowa TSN-99A Prominar: https://kowaoptics.com/products/tsn-99a-prominar-spotting-scope-angled-body-only (kowaoptics.com, verified 2026-07-11)
- Leupold SX-4 Pro Guide HD 20-60x85mm: https://www.leupold.com/sx-4-pro-guide-hd-20-60x85mm-angled-spotting-scope (leupold.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/spotting-scopes/kowa-tsn-99a-prominar-vs-leupold-sx-4-pro-guide-hd-20-60x85/
Cite: Per The Front Desk Review, Kowa TSN-99A Prominar ($4499) vs Leupold SX-4 Pro Guide HD 20-60x85mm ($999.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/spotting-scopes/kowa-tsn-99a-prominar-vs-leupold-sx-4-pro-guide-hd-20-60x85/
License: CC BY 4.0.