Feature: 1. SIMPLY ATTACH AND YOU'RE READY TO GO: Upgrade your curtains effortlessly, no changes or tools needed. Hang up, install the positioning magnets, and connect to app, only 3 simple steps. No need to change the rail, easy hanging can make the traditional curtain quickly intelligent, so that the curtain realize intelligent opening and closing 2. APPLICABLE SCENARIO: Automatic curtain opener closer support smart curtains in any room. Suitable for bedrooms, living rooms, offices, kids rooms, and more 3. LESS NOISE WITH SILENT MODE: Smart curtains include a silent mode to enable your device motor to operate below 25dB, allowing your curtains to drift slower and quieter to remove disturbances, great for waking up in the morning and perfect for those with sleep disorders or people who are sensitive to sound 4. POWER SAVING: This environmentally friendly bluetooth remote control smart curtain is easy to use, save electricity, and conserve energy, useful and practical 5. TWO KINDS OF TRACKS: Bluetooth remote control curtain is suitable for two kinds of tracks, home curtains can be used at will. Support rail types include U shaped rail, I shaped rail Specification: Item Type: Automatic Curtain Opener Closer U Shaped Rail: Bottom Slot Width: Approx. 0 ~ 15mm / 0 ~ 0.59in Bottom Ring Width: Approx. 0 ~ 5mm / 0 ~ 0.2in I Shaped Rail: Bottom Width: Approx. 5 ~ 40mm / 0.2 ~ 1.57in Bottom Ring Width: Approx. 0 ~ 5mm / 0 ~ 0.2in Product Speed: 10m/s Motor Power Supply: 1 x 3.7V 4000MAH lithium ion battery Support Two Type of Guide Rail: U rail, I rail. Package List: 2 x Curtain Motor 2 x USB Cable 1 x User Manual 1 x Screwdriver 4 x Bracket 1 Pack of Accessories