It sports an electric sound speaker, shutter release active lamp, interval timer, long exposure (it can use interval timer and long exposure simultaneously), self timer, TIME exposure and a release hold mechanism. Take photos without touching your camera and take pictures at regular intervals for time-lapse projects | Timer functions can be set to 99 hours 59 minutes and 59 seconds in one second increments. Number of shots can be set from 1 to 399 and ' - - ' unlimited. LCD display with backlight and status LED with alarm. A locking two stages shutter button (BULB) | Replaces Fujifilm RR-90. Compatible with Fujifilm GFX50S, X-Pro2, X-H1, X-T2, X-T1, X-T10, X-T20, X-T100, X-E2S, X-E2, X-E3, X-M1, X-A20, X-A5, X-A3, X-A2, X-A1, X-A10, X100F, X100T, X70, X30, XQ2, XQ1, XF10, FinePix S1. (NOTE: NOT FIT Fujifilm GFX 100, GFX50R, X-Pro3, X-T3, X-T4, X-T30, X-T200, X-A7, X-E1, X100V)