340.29m/s

 (ソニックメートルパーセコンド; Pronounced Sonic mètre per second) is a Rock EDM idol group based in Osaka.

The group disbanded on January 21, 2023.

Final Line-up

 * Nozomi Mahiro (望まひろ; ) (Original Member)
 * Itou Rito (糸生りと; ) (Original Member)
 * Amane Sui (天音スイ; ) (Joined November 2021)
 * Mizuno Ayuka (水乃あゆか; ) (Joined November 2021)

Former Members

 * Hazuki Miwa (葉月みわ) (Original Member, Withdrew September 30, 2021)
 * Marino (マリノ) (Joined November 2021; Graduated September 4, 2022)

Mini Albums

 * 1) [2019.11.03] 340.29m/s
 * 2) [2020.05.20] Shikku (疾駆)
 * 3) [2021.03.14] ACCELERATION

Singles

 * 1) [2021.12.28] CROSS COUNTER
 * 2) [2022.11.09] MEANING