Japanese “service charge” button emoji 🈂️ is part of the Symbols and Alphanumeric Symbols emojis. On some systems it can be accessed by using :japanese_service_charge_button:, :ja_service_charge: or :sa: shortcodes.
It was approved as part of Unicode in 2010 so it should be displayed properly on all devices.
Tags: Japanese, Japanese “service charge” button, Katakana, “service charge” and サ