CIO Corporation Announces Second Wave of Products for Amazon Prime Day: SMARTCOBY Series and Semi-Solid State Power Banks Available at Special Prices!

CIO Corporation (Headquarters: Moriguchi City, Osaka Prefecture; CEO: Shodai Nakahashi), a Japanese gadget manufacturer, will participate in Amazon's "Amazon Prime Day" event. Products will be available at discounted prices during both the "Prime Day Early Sale" (July 7, 2026 (Tue) 00:00 – July 9, 2026 (Thu) 23:59) and "Prime Day" (July 10, 2026 (Fri) 00:00 – July 13, 2026 (Mon) 23:59). (※1) Please note that offers are subject to availability and may end earlier if stock runs out.

The second wave of Amazon Prime Day products features best-selling CIO mobile power banks, including the popular "SMARTCOBY" series and fire-resistant "semi-solid state power banks."

CIO Prime Day Special Page: https://connectinternationalone.co.jp/bigsale/

CIO's Amazon Store: https://www.amazon.co.jp/stores/%EF%BC%A3%EF%BC%A9%EF%BC%AF/page/F6313E8D-EBBD-4B75-9033-4D89951F1D23

• SALE Featured: Recommended Semi-Solid State Power Banks

SMARTCOBY Ex04 Wireless2.2 CABLE SS5K

Despite its slim profile of approximately 14mm, this power bank supports up to 25W wireless charging via Qi2.2 and up to 20W wired output. It features a semi-solid state battery cell designed for enhanced fire resistance, prioritizing safety.

Equipped with a detachable 22cm USB-C cable, it eliminates the hassle of forgetting cables and enables instant charging whenever needed. With a practical 5000mAh capacity and a compact size that easily attaches to smartphones, it's highly portable.

Sale Price: ¥5,980 (incl. tax) 16% OFF

Product Page: https://www.amazon.co.jp/dp/B0FTZ46NF8

SMARTCOBY Pro SLIM SS

A slim semi-solid state power bank measuring approximately 16mm thick, with a 10,000mAh capacity and single-port output up to 35W. It features three ports: two USB-C and one USB-A, supporting simultaneous charging of up to three devices such as smartphones, tablets, and laptops.

It supports pass-through charging, allowing you to charge the power bank itself while powering connected devices. The surface includes a digital battery level display, enabling instant visual checks of remaining charge and charging status.

This evolved power bank combines CIO's signature ease of use with semi-solid state battery technology, achieving both enhanced safety and practicality.

Sale Price: ¥4,980 (incl. tax) 21% OFF

Product Page: https://www.amazon.co.jp/dp/B0GMX4WKYG

SMARTCOBY TRIO 35W SS 20000mAh

A high-capacity semi-solid state power bank with 20,000mAh capacity and single-port output up to 35W.

Measuring approximately 91×68.8×29.5mm and weighing about 320g, it offers a size convenient enough for travel and outdoor use despite its large capacity. It features three ports (two USB-C, one USB-A), supporting up to three devices simultaneously.

It also supports up to 35W input charging, achieving an optimal balance between capacity, output, and portability.

Building on the usability of previous models, this power bank integrates semi-solid state battery technology to deliver a safe, high-capacity solution.

Sale Price: ¥7,480 (incl. tax) 19% OFF

Product Page: https://www.amazon.co.jp/dp/B0GMXGS247

SMARTCOBY TRIO 67W SS 20000mAh

A high-capacity semi-solid state power bank with 20,000mAh capacity and single-port output up to 67W. It features three ports (two USB-C, one USB-A), supporting simultaneous charging of up to three devices.

Equipped with CIO's proprietary control technology "NovaIntelligence," it automatically distributes power based on the connected device, ensuring a smooth and efficient charging experience.

This model builds on previous designs while incorporating semi-solid state batteries, offering a high-output, high-capacity solution with enhanced safety.

Sale Price: ¥8,880 (incl. tax) 19% OFF

Product Page: https://www.amazon.co.jp/dp/B0GMWVL8FD

SMARTCOBY SLIMII Wireless2.0 SS5K

A next-generation mobile power bank designed to reduce fire risk compared to conventional lithium-ion polymer batteries.

It uses semi-solid state cells from Tier1 battery manufacturers, proven in the smartphone industry.

Despite its slim 8.7mm design, it achieves high safety standards through CIO's proprietary technologies: "NovaSafety S2" (heat suppression firmware) and the new "NovaCore C2" (CIO's proprietary internal structural design standard), meeting the demand for high-safety power banks.

Features Qi2 standard with up to 15W wireless output, 5000mAh capacity, and an aluminum alloy casing.

Sale Price: ¥5,980 (incl. tax) 14% OFF

Product Page: https://www.amazon.co.jp/dp/B0FTZ1X6NC

SMARTCOBY SLIMII Wireless2.2 SS5K

A 5000mAh semi-solid state power bank supporting Qi2.2 with up to 25W wireless fast charging.

Approximately 11.6mm thick and weighing about 153g, it offers a slim and lightweight design.

With Qi2.2 support and up to 25W wireless charging, plus up to 20W wired output, it combines safety and portability while supporting a wide range of devices.

Sale Price: ¥6,280 (incl. tax) 14% OFF

Product Page: https://www.amazon.co.jp/dp/B0GMWW1GFR

SMARTCOBY SLIMII Wireless2.2 Pro SS10K

A 10,000mAh semi-solid state power bank supporting Qi2.2 with up to 25W wireless fast charging.

In addition to exceeding the previous 15W fast charging standard, it offers selectable 7.5W/25W output modes and heat-suppressing charging options. Its 17mm-thick design includes MagSafe-compatible magnetic attachment.

A high-end model featuring dual-device simultaneous charging, full pass-through charging, and 1% incremental digital battery level display, combining functionality and practicality.

Sale Price: ¥6,980 (incl. tax) 19% OFF

Product Page: https://www.amazon.co.jp/dp/B0GMWY26HF

• SALE Featured: Recommended SMARTCOBY Series

SMARTCOBY SLIM II Pro 8K

An 8,000mAh mobile power bank with a slim, lightweight design (approximately 11mm thick, 161g) featuring MagSafe-compatible magnetic attachment.

Ideal for users who find 5,000mAh insufficient and 10,000mAh too heavy—a "best balance" design.

Supports up to 30W wired output, capable of charging smartphones, tablets, and some laptops. Equipped with full pass-through charging and low-current mode, it's suitable for daily use, business trips, and travel.

Sale Price: ¥5,480 (incl. tax) 23% OFF

Product Page: https://www.amazon.co.jp/dp/B0FPLZHNQP

SMARTCOBY SLIM II Wireless 2.2 8K

An 8,000mAh mobile power bank with Qi2 certification and up to 25W wireless charging.

Designed to meet customer demand for a "best balance" between the limited capacity of 5,000mAh and the bulkiness of 10,000mAh models.

With a lightweight body of approximately 12mm thickness and 170g, it also supports up to 30W wired charging. It features two modes: "High Performance Mode" for prioritizing charging speed and "Safety Mode" to suppress heat generation, enabling optimal charging based on usage scenarios.

Sale Price: ¥6,480 (incl. tax) 19% OFF

Product Page: https://www.amazon.co.jp/dp/B0GKPBZ8S4

SMARTCOBY ULTRA SLIM 3K

A world-class ultra-slim magnetic power bank, approximately 4.98mm thick and weighing about 82g.

Designed for seamless integration with iPhones, it delivers a "wearable" experience without protruding.

Supports MagSafe and Qi wireless charging (up to 7.5W), with a 3,000mAh "top-up" capacity. It also supports Apple's "Find My" feature, providing anti-loss protection in an ultra-slim form factor.

Sale Price: ¥7,980 (incl. tax) 11% OFF

Product Page: https://www.amazon.co.jp/dp/B0FTZ596XR

(※1) Regular prices and discount rates are calculated by CIO Corporation based on the suggested retail prices on the CIO official website as of June 19, 2026, rounded to the nearest value.

※Amazon and Amazon.co.jp are trademarks of Amazon.com, Inc. or its affiliates.

• About CIO Corporation

CIO Corporation (founded in 2017) operates under the philosophy of "Creating an exciting future with multifunctional and cutting-edge technology." Focusing on smartphone accessories such as chargers and mobile power banks, CIO designs and manufactures original products, each infused with a unique story and purpose. The company strives to deliver the childlike excitement of discovering how convenient and powerful multifunctional, high-performance devices can be. With this vision, all employees are committed to bringing you "exciting, cutting-edge gadgets."

CIO Corporation Official Website: https://connectinternationalone.co.jp

CIO Official X: https://x.com/cio_jp_official

CIO Official YouTube Channel: https://www.youtube.com/c/ciojapan

CIO Official LINE Account: https://lin.ee/aToNrva

Media Inquiries and Product Requests: https://connectinternationalone.co.jp/contact/