Overview

The EPOMAKER TH87 JIS is a 91-key tenkeyless mechanical keyboard built specifically for Japanese-language users. It keeps the dedicated kana, henkan and muhenkan keys that JIS typists rely on, while trimming the numpad to free up desk space for the mouse. If you write Japanese documents all day and still want a compact board for gaming, this layout is the whole point of the product.
Connectivity covers three paths: a 2.4GHz wireless dongle, Bluetooth 5.0, and plain USB wired. The battery is rated at 10000mAh, which EPOMAKER quotes as up to 200 hours with the backlight off and 45 hours with it fully lit. Wired and 2.4GHz modes both run a 1000Hz polling rate, with latency quoted at roughly 2ms wired and 5ms over 2.4GHz.
Typing feel comes from factory-lubricated switches, a gasket mount, and double-shot PBT Cherry-profile keycaps. Buyers can pick between the quiet Sea salt switch and the clackier Creamy Jade switch. The PCB is hot-swappable for common 5-pin mechanical switches, so the board can be re-tuned later without soldering.

Connectivity & Compatibility

Three connection modes cover most setups. Use the 2.4GHz receiver when latency matters, Bluetooth 5.0 when you are hopping between devices, and wired when you want steady power and a rock-solid link. One-touch switching and shortcut keys make moving between paired devices quick.
The layout is JIS Japanese, and the board is aimed at Windows environments. A Chrome-based driver utility runs both online and offline, handling macros and key remapping so rarely used keys can become everyday shortcuts. That makes it as much an office tool as a gaming board.
The hot-swap PCB accepts mainstream 5-pin switches, and the PBT double-shot keycaps use a Cherry-style profile that resists shine over long sessions. Per-key RGB lighting is adjustable for saturation, brightness and blink speed.

Product Info

The TH87 JIS sits in the mid-range of Japanese-layout TKL mechanical keyboards.Check the retailer's page for the latest price. Wireless JIS TKL boards are a narrow field, so this model targets buyers who want features and price balance rather than a flagship badge. Several colorways are offered, including Blue&White.

Best Use Cases

  • Japanese-language typists who need the kana and conversion keys in their natural positions: the JIS layout removes the friction of remapping, though anyone living in spreadsheets will miss the numpad.
  • Gamers who want more mouse room on a crowded desk: the tenkeyless body plus 1000Hz polling over 2.4GHz covers fast play, while buyers chasing absolute silence should look at the quiet switch option instead.
  • Hybrid workers carrying one board between home and office: Bluetooth and the large battery mean charging is rarely a concern, but a permanently desk-bound user gains little from the portability.

Product Disclosure (Amazon)

  • Manufacturer: EPOMAKER
  • Model: TH87 JIS
  • ASIN: B0G4LTQRRH
  • Note: This article covers a manufacturer-made product based on Amazon listing details.