Features:* 100% brand new and high quality.* Made of high quality material, durable and practical to use.* Product usage: perform robot remote control, adjust multiple functions.* Installation method: open the back cover of the remote control and install the battery, then it can be used normally. Specifications:* Mounting: RC1633 for ECOVACS robot vacuum cleaner DEEBOT OZMO 500 501 502 505 600 601 605 711 710* Input voltage: 3V* Color: Black (as pictures show)Package Contents:1 * Remote Control (without battery)Warm Tips:This product does not contain batteries, you need to prepare 2AAA batteries by yourself. Note:1. The actual colors of the item may be slightly different from the pictures displayed on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.