External keyboard for Android phones in comparison

Built-In Rechargeable Battery -- The micro-usb re-chargeable battery offers less than 2 hours for charging, work time is up to 50 hours, standby time is up to 560 hours.

Battery Keyboard The Bluetooth keyboard needs to be loaded with 2 AAA batteries to turn on and use. Use the shortcut key Fn+Ctrl to check the battery level, the red indicator light flashes 1 time for 25%, 2 times for 50%, 3 times for 75% and 4 times for 100%. (This product does not include batteries, you need to purchase your own)

PINKCAT

ULTRA-THIN and LIGHTWEIGHT Folded 6.37" x 3.8" x 0.4", unfolded 12.6" x 3.8" x 0.2". Weighs only 138.8g (4.9 ounces). The innovative, foldable design easily fits into a purse, bag, or pocket. Suitable for travel and work

Tri-foldable Design Black Geyes tri-folding bluetooth keyboard without delay connection. Longer battery life, wide compatibility, mini packed size. They are specifically designed for easy and portable daily use.

Long-lasting Battery Life Our innovative keyboard Powered by 2 AAA batteries. And it features an environmental friendly auto-sleep mode. Click any key to wake it up after 10 minutes of inactivity. (battery life can up to 12 months. No more frequent replacements,User experience may vary)

* *---- Embrace Freedom of Bluetooth & 2.4GHz Wireless Control and Simplicity of Plug-and-Play Setup with Mini Wireless Keyboard Featuring Touchpad. You can Quick Connect it via Bluetooth or Effortlessly Set Up in Seconds Using USB Receiver.

Convenient Stand You can place your iPad or iPhone on the built-in stand easily, after you fully extend stand from the back of the keyboard, supporting device ranges from 4.0 to 10.5 inch. (Note the stand can't be opened at 90 degree.) It is convenient for you to use the tablet keyboards to handle work while traveling.

Easy Setup and Complete Package Switch operating systems effortlessly with FN+Q (iOS), FN+W (Android), FN+E (Windows). Included in the package are a foldable keyboard for Android, USB charging cable, and user manual. Backed by a 12-month warranty and responsive customer support, this tablet keyboard with touchpad is a reliable choice for professionals and travellers alike

Dual-Device Simultaneous Connection Dual Bluetooth channels enable instant switching between paired devices . Maintains stable 10m wireless range with ,2 Bluetooth channels can be switched seamlessly between 2 devices, and the foldable keyboard can connect seamlessly to cell phones, tablets.

Suitable for Home Entertainment Elevate your home entertainment experience with the Rii K22S wireless keyboard with trackpad, designed for seamless control of your HTPC, smart TV, and Windows devices. Ideal for typing, streaming, and gaming from the comfort of your sofa.Tips Not totally competible with Mac,OS,IOS system,can't emulate macbook trackpad.

Rechargeable and Long Standby With a built-in rechargeable battery capacity of 40 Hours of working time after 2 hours of full charging, you can go with it for a short business or vacation.