This article covers Rounkin クレジットカードドック Square Reader 1stと2nd 用 美しくコンパクトなケース スクエアリーダー用 スリープ防止ボタン対応 ワンクリックでオンに (ケーブルと壁の充電器付属 リーダーなし) ホワイト.

Overview

The Rounkin Credit Card Dock for Square Reader 1st & 2nd is a compact ABS-built holder that turns a Square card reader into a tidy countertop station. It supports both the first- and second-generation Square Reader, and its anti-sleep button on the base wakes the reader without removing it from the dock. The bundle includes a wall charger plus two charging cables (USB-A to Micro USB and USB-A to USB-C), while the dock itself measures 78.5 x 78.5 x 41.5 mm and weighs 549 g. That puts it in the entry-level accessory tier, aimed mainly at small storefronts and mobile vendors who want a neat charging spot for their reader.
Unlike simple protective sleeves, this dock keeps the reader ready on the counter: you press the base button once to power it on, and the reader stays cradled for charging and storage. The ABS shell has a smooth, scratch-resistant finish, and non-slip silicone pads on the bottom keep the dock from sliding during card insertions. Since the Square Reader itself is not included, this is a supporting accessory rather than a standalone device. For businesses standardizing on Square hardware, it is a practical way to avoid losing or misplacing the reader between transactions.

Connectivity & Compatibility

The dock is compatible with Square Reader 1st generation and 2nd generation. The anti-sleep button sits on the base, so you can wake the reader with a single press without lifting it out of the dock.
Charging-related specs:

  • Charging connector: USB Type-C
  • Included cables: USB-A to Micro USB, USB-A to USB-C
  • Bundled wall charger: 12V input / 10W output
  • USB port count: 1
    The card reader itself is not included. This is strictly a dock for storing and charging the Square Reader, so it does not act as a general-purpose USB hub or docking station for PCs or smartphones. It is also not compatible with other brands of card readers, so check your hardware before purchasing.

Product Info

This Rounkin accessory is sold mainly through online e-commerce channels, with a street price around ¥3,700. That places it firmly in the entry-level tier for card reader docks. The manufacturer does not clearly publish a release date, but the unit appears to have been in circulation since around autumn 2023.
In the box you get the dock body, two charging cables, and one wall charger. No Square Reader or smartphone is included. Formal warranty terms are not widely documented, so it is worth checking the seller's warranty policy before you buy.
From a market-position standpoint, this is a niche entry-level product that combines a protective case and a charging dock at a time when Square Reader accessories are still relatively scarce. Buyers who prioritize utility and price over premium build quality will find it a reasonable fit. Including two cable types is a thoughtful touch, ensuring compatibility with both older and newer Square Reader models.

Best Use Cases

  • Retail and food-service staff who use a Square Reader at the register all day — the dock keeps the reader in place and wakes it with one tap, cutting down on fumbling during checkout. If you prefer to hand the reader to customers, however, you may find the fixed dock position awkward.
  • Solo vendors at flea markets, pop-ups, and delivery points — the dock doubles as a protective case during transit, and the bundled cables let you charge on the go. Those trying to minimize luggage may find the 549 g weight a bit heavy.
  • Shop operators who want a cleaner counter and fewer loose cables — everything needed for charging is included, so you don't have to buy a separate adapter. If you need to charge multiple devices simultaneously, the single USB port will feel limiting.

Product Disclosure (Amazon)

  • Manufacturer: ROUNKIN
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0CK1QX45G
  • Note: This article covers a manufacturer-made product based on Amazon listing details.