TSN-663M XD Prominar here in a lightweight package together with Sirui R-2004 aluminum tripod and VH-10 video head.
With its lightweight polycarbonate housing, it combines the flexible format that many appreciate with compact spotting scope, but at the same time has 20 percent better light absorption than, for example, the Kowa TSN-601. This makes it better in combination with zoom eyepieces 20-60x, where the higher magnifications (45-60x) become critically dim with a smaller objective. The housing is otherwise the same as on the predecessors, but has changed color to the now common moss green that characterizes all Kowa binoculars. The red ring around the lens and the additional text Prominar gossip that the internal measurement is of the same high class as Kowa's top tubes in the TSN-770 series, i.e. an XD glass in the lens that counteracts chromatic aberration and thus provides a noticeably better light transmission with a higher contrast effect and more accurate color reproduction in all situations. Light protection and nitrogen gas filling for full tightness against water, condensation and dust are of course standard. On the side of the prism housing there is a sighting notch that should make it easier to find small objects against a contrastless sky, for example. The foot has standard quarter inch (1/4'') thread and is tiltable in fixed positions. This is a perfect package for those who want nice optics for many years to come, but perhaps don't want to spend more than SEK 20,000. The scope deliver a very nice and sharp image.
Product information TSN-663 Prominar
Size: 311 x 140 x 90 mm
Weight: 1278 g incl. 20-60x zoom
Closest focusing distance: 6 m
Filter diameter: 72 mm
Waterproof: Yes
Warranty: 10 years
Product information Sirui R-2004 / VH-10
Max leg diameter: 28 mm
Minimum (folded) length: 61 cm
Maximum height without center pillar: 143 cm (incl. head)
Maximum height including center pillar: 172 cm (incl. head)
Number of sections: 4
Weight: 2.6 kg
Max load: 15 kg on the legs, 6 kg on the head
Counterweight spring, load: 2 kg
Warranty: 6 years