Product Design

Hidetoshi Nakayama’s Gennai Pen SL01: Steampunk EDC Pen

Nakayama-designed, TACTICALGEEK-made stainless steel pen with satisfying Telegraph Key action and Parker-style G2 refill compatibility.

HK$393,241

pledged of HK$62,000 goal

183 backers

25 days to go

8 reward tiers

Back on Kickstarter ↗

About This Project

The Gennai Pen SL01 is an exclusive collaboration between Japanese artist Hidetoshi Nakayama and TACTICALGEEK, bringing Nakayama's distinctive mechanical steampunk aesthetic into small-batch production. The pen features exposed screws, layered construction, and a Telegraph Key-style lever mechanism that extends and retracts the Schmidt P900M refill with satisfying mechanical feedback. Available in Natural Stainless Steel or Cerakote Ceramic Coated finishes, with limited hand-engraved and fully handmade collector editions. The project is limited to approximately 2,000 pens with an estimated delivery of January 2027, backed by a lifetime warranty and TACTICALGEEK's nine-campaign delivery track record.

Key Highlights

 ▸ Designed by acclaimed Japanese artist Hidetoshi Nakayama with signature mechanical steampunk aesthetic 

 ▸ Telegraph Key-style lever mechanism with satisfying click extend and smooth retract action 

 ▸ Lifetime warranty with SUS303 stainless steel or Cerakote ceramic coated body options 

Technical Specs

Spec	Details
Brand / Collaboration	TACTICALGEEK × Hidetoshi Nakayama
Body Material	SUS303 Stainless Steel / Ceramic Coated
Mechanical System	Telegraph Key–Style Lever Mechanism
Refill Compatibility	SCHMIDT P900M and standard G2-size refills
Overall Length	Approx. 96 mm
Maximum Body Diameter	Approx. 10 mm
Weight	Approx. 63 g
Finish Options	Natural Stainless Steel / Ceramic Coated Edition
Included	Gennai Pen SL01 × 1, SCHMIDT P900M Refill × 1, Collaboration Card × 1
Estimated Delivery	January 2027

Reward Tiers

backers

Support (No Reward)

USD

Support the project for no reward, just because it speaks to you.

130 backers

Natural Stainless Steel – Super Early Bird

HKD1,481

~$189 USD

Gennai Pen SL01 in Natural Stainless Steel. 72 hours only, limited to 299 rewards.

backers

Natural Stainless Steel – Early Bird Special

HKD1,559

~$199 USD

Gennai Pen SL01 in Natural Stainless Steel. Limited to 600 rewards.

25 backers

Ceramic-Coated Edition – Super Early Bird

HKD1,795

~$229 USD

Gennai Pen SL01 in Ceramic-Coated Steel. 72 hours only, limited to 199 rewards.

backers

Ceramic-Coated Edition – Early Bird Special

HKD1,874

~$239 USD

Gennai Pen SL01 in Ceramic-Coated Steel. Limited to 400 rewards.

15 backers

2-Pen Dual-Finish Set – Super Early Bird

HKD3,199

~$408 USD

Dual-pen set: Natural Stainless Steel × 1 and Ceramic-Coated Edition × 1. Limited to 299 sets.

backers

Xunmu Hand-Engraved — 1 of 1 Worldwide

HKD33,676

~$4295 USD

One-of-a-kind hand-engraved piece by artist Xunmu. Limited to 1 worldwide. Ships approx. 10 days after campaign ends.

backers

Hidetoshi Nakayama Handmade Edition

HKD36,073

~$4601 USD

The only fully handmade piece in this collaboration. Limited to 1 worldwide. Exceptional rarity and collectible value.

Risks & Challenges

As with any manufacturing project, unexpected challenges such as material shortages, production adjustments, shipping delays, or customs issues may arise. TACTICALGEEK has a 100% delivery record across nine previous Kickstarter campaigns but notes that delivery times may vary by destination. The team commits to transparent communication and will handle issues with remanufacturing, replacement, or reshipment if needed.