Thank you for viewing! [Product Description] △4 ■ Connection method: Bluetooth(R) wireless ■ Compatible devices: Windows OS, macOS, Chrome OS, iOS, iPadOS, and Android OS devices that support the Bluetooth(R) HOGP profile ■ Supported OS: Windows 11, Windows 10, Windows 8.1, macOS Big Sur (11), Android 11, iOS 14, iPad OS 14, Chrome OS ■ Number of connectable devices: 3 ■ Color: Black ■ Communication method: GFSK ■ Radio frequency: 2.4GHz band ■ Radio wave reach: Approximately 3m when used on a magnetic material (such as an iron desk), approximately 10m when used on a non-magnetic material (such as a wooden desk) *This is a test value in our environment and is not a guaranteed value. ■ Key type: Membrane ■ Key layout: 109 keys + 9 keys (Japanese layout) ■ Key pitch: 19mm ■ Key stroke: 2mm ■ Number of hotkeys: 15 ■ Power supply (keyboard body): 2 AA alkaline batteries, AA manganese batteries, or AA nickel-hydrogen rechargeable batteries ■ Estimated battery life: Approximately 1.5 years when using alkaline batteries *Assuming 8 hours of computer operation per day ■ External dimensions (keyboard body): Width 442.8mm x Depth 139.8mm x Height 26.8mm (excluding stand), Width 442.8mm x Depth 139.8mm x Height 35.3mm (with stand) ■ Weight (keyboard body): Approximately 440g *Excluding batteries ■ Supported profile: HOGP (HID Over GATT Profile) ■ Other: Compliant standards: Bluetooth 5.1 Class2 [Product Condition] ・Only inserted batteries, not used. ・Please check the photos for details(^^ゞ ※We have many other items for sale, so please take a look♪ ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆ ・Please check the product description and profile, and only purchase if you understand. ・Some products will be shipped without the box. Please understand in advance. ・If you have any questions about the product, please feel free to comment (*・ω・) I want to have a pleasant transaction with everyone. Please do not hesitate to point out anything you are unsure of (o・ω・o)