From products that simplify daily life to wireless technology that connects the world.
Calico works across both fields and brings them together into one everyday experience.
The People Behind Calico
Three people who built products and marketing at large companies,
then went on to create products and businesses of their own.
Kichang Yi
Embedded Engineer
Keumlim Choi
Product Engineer
Yongseok Wi
Marketing & Business Leader
Products
Rather than adding features, we take away the friction of using them.
The more often you use something, the simpler it should be.
Coming soon
Sharkbi (Shark3B)
A broom made from silicone.
A patented head sweeps cleanly into narrow gaps.
Nasal aspirator
A nasal aspirator designed for children and parents alike.
Built to be simple to use.
We also develop hardware and applications
built on wireless technology
UWB · BLE · LTE-M · GPS
Products › Tower go
Tower go
A space-saving tower recycling bin
built with a tarpaulin bag
₩16,900 two-tier
Buy
＊ Price and stock follow each channel.
Stacks upward, saves floor space
The two-tier model holds 150 liters in about the footprint of a sheet of A4. All it needs is a bit of wall.
Assembles with four rods
Slide in four stainless rods and it is done. It ships flat, so it takes little space, and the rods can be reused elsewhere.
Fits naturally into your space
The blue-and-white contrast reads more like a storage unit than a bin.
Lighter, thanks to tarpaulin
A tarpaulin bag replaces the rigid bin. It is light to lift out, and wipes clean when wet. The opening clips inside the frame so the bag never sags outward.
Build only as tall as you need
Choose two tiers or three. Add a tier as your sorting grows — the frame is the same, so you only need the extra parts.
Specifications
| Type | Two-tier / Three-tier |
|---|---|
| Capacity | 150L tarpaulin bag |
| Frame | Stainless rod assembly |
| Color | Blue / White |
| In the box | Frame · Stainless rods · Tarpaulin bag |
Certification
Only items with a confirmed certification number are listed. If there is no value, this block is not rendered.
Assembly and use
How long does assembly take?
Can I buy the tarpaulin bag separately?
Can I extend a two-tier to three?
How do I clean it?
How do returns and exchanges work?
We develop wireless technology
that reads location and status.
From centimeter-level indoor positioning to low-power wide-area networks.
We work with you from requirements through to mass production.
From first sketch to production
Requirements · System design
We fix the required accuracy and power budget first, then design the positioning method and communication architecture around them.
Hardware · Antenna
We design the RF circuit, then place and tune the antenna with the actual product housing in mind.
Firmware · Low power
We implement the firmware for the target service and tune current draw to the power conditions.
Handover to production
We move to production after validation and certification, working alongside our manufacturing partners.
Development references
UWB AoA + BLE Channel Sounding positioning
Workplace RTLS (Real Time Location System) for preventing industrial accidents
BLE 6.0 Channel Sounding
Hardware · Firmware development
Heimdall, an industrial safety AI platform
Serious Accidents Punishment Act compliance
Tech note — why we combined the two
On accuracy alone, UWB wins. But it needs anchors installed densely and it draws a lot of power. BLE is the better answer on cost and power, yet conventional methods cap out on accuracy. Channel Sounding in BLE 6.0 adds round-trip time (RTT) to phase-based ranging (PBR), narrowing this to 10–30 cm while reusing existing BLE infrastructure. So we covered only the zones that need high precision with UWB AoA, and filled the wider remaining area with low-power BLE CS.
| Technology | Accuracy | Characteristics |
|---|---|---|
| UWB | Within 10 cm | Accurate, but costly to install and power-hungry |
| BLE AoA | 0.5~1m | Low power and low cost, but needs multiple antennas and is prone to interference |
| BLE 6.0 Channel Sounding | 10~30cm | Combines PBR and RTT to approach UWB using existing BLE infrastructure |
LTE-M + GPS + BLE carbon reduction sensing
Range and battery monitoring for electric two-wheelers
Ride data collection system
Electric two-wheeler conversion · Carbon credits
an estimated 1,020 tons of CO₂ saved
PLC communication module for AC EV chargers
EV charging protocol
Fire prevention and overcharge protection
We make everyday products too
View productsWhat we make isn't more features,
it's a calmer everyday life.
We take the complexity away,
and keep the functions you need intuitive.
Founders
Kichang Yi
An embedded engineer whose work spans vehicle development and a BLE hardware startup
Hyundai Motor, Senior Research Engineer 10 yrs
Engineering PM, RV vehicle development
Tuneit Inc., Co-founder · CTO Digital key startup
Mass production of BLE digital keys · Smartphone-linked Carnival seats
Keumlim Choi
A product engineer who has planned and built everything from automotive control systems to baby products
Hyundai Motor, Senior Research Engineer 15 yrs
Hybrid control system development
Poled Inc., Co-founder · CTO Baby car seat startup
Top safety-rated car seat · World No.1 ventilated baby seat
Yongseok Wi
A marketing and business lead who knows how large companies run, and has grown startups first-hand
LG Electronics 10 yrs
HR · Business management · Marketing
Poled Inc., Head of Business (Center Director) Baby car seat startup
CFO and CHO at a baby car seat startup
Built and ran the HR and organizational systems
Led and managed over ₩10B in investment
Contact
Tell us what you need — bulk orders, technical collaboration, anything.
We reply within two business days.
Privacy Policy
Effective January 1, 2026
1. Information We Collect
Calico ("the Company") collects your name, company, email, phone number, and message through the contact form. Access logs, cookies, and IP addresses may also be generated automatically as you use the service.
2. Purpose of Collection and Use
Collected information is used only to respond to enquiries and to provide guidance on products, technical collaboration, and bulk-order requests. It is never used for any other purpose.
3. Retention Period
The Company destroys personal information without delay once its purpose has been fulfilled, except where retention is required under applicable law, in which case the information is kept for the period the law specifies.
4. Disclosure to Third Parties
The Company does not share personal information with outside parties as a rule, except with your prior consent or where required by law.
5. Your Rights
You may request to view, correct, or delete your personal information at any time by contacting us at the address below.
6. Privacy Officer
Email us at info.cs.calico@gmail.com and we will respond promptly.