Reactor-Custom Watch Kit
$5501,848
44 mm100 m WRSapphire
The Sensei's take
The Tsarbomba Reactor-Custom Watch Kit stands out for its modular design that allows for easy customization, making it perfect for those who enjoy personalizing their accessories. With robust water resistance and solid build quality, this watch offers excellent value for money in the microbrand market.
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At a glance
Strengths & trade-offs
Pulled straight from the spec sheet, framed for the buyer. The editorial verdict is the Sensei's take above.
Strengths
- Everyday water resistance (100m)
- Scratch-resistant sapphire crystal
- Luminous dial and hands
Trade-offs
- Priced above what the spec suggests
Sensei Says
The specs, in plain English
On the wrist
At 44 mm it wears boldly, a long 52 mm lug-to-lug favours larger wrists.
The value
Fairly priced for what it is.
On the wrist
How will this watch fit me?
Enter your wrist size once — we'll remember it — and the Sensei estimates the fit from the case measurements.
Wrist circumference
Preferred fit
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Specifications
- Reference
- TB8213DIY
- Released
- 2026
- Production
- Current production
- Case diameter
- 44 mm
- Lug-to-lug
- 52 mm
- Thickness
- 13 mm
- Lug width
- 26 mm
- Case shape
- Round
- Case material
- 316L Stainless Steel, Carbon Fiber
- Water resistance
- 100 m
- Crystal
- Sapphire
- Bezel
- None
- Caseback
- Closed
- Dial colour
- Carbon Fiber Black
- Indices
- none
- Lume
- Yes — Grade A
- Strap / bracelet
- Interchangeable
- Clasp
- Quick Release
- Functions
- Hours, Minutes, Automatic
- Fit
- Unisex
The maker
Tsarbomba
Tsar Bomba believes in fusing the precision of Swiss craftsmanship with the versatility of interchangeable modular components. This philosophy caters to modern consumers who value customization and personal expression in their timepieces.
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