Like the original ThinkPad Tablet, the Tablet 2 has an optional stylus (with digital pen functionality) for precision input, which can be stored in the side of the tablet. Lenovo also released a Bluetooth keyboard that can be carried with the tablet in a folio-style case. The Tablet 2 has a full-size USB 2.0 port for connecting accessories and another micro-USB 2.0 to be used for charging only (using the built-in adapter, though other micro-USB cables also work). Powered USB devices will not work on the full-size USB port. External displays can be connected using the mini-HDMI port. A headphone/microphone combo jack and a connector for an available docking station for the device, which included three full-size USB ports, separate headphone/microphone jacks, HDMI, Ethernet, and a 20 V power connector for fast charging. The following hardware buttons can be found around the tablet: Windows button, Power button, volume control button, rotation lock switch, reset switch. Models with 3G and 4G cellular data are both available. The Tablet 2 will have Near Field Communications, also known as NFC, built in. The tablet is also equipped with two cameras. It has an 8-megapixel rear camera with LED flash, and is capable of 720p video capture. The front camera is 2.0 megapixels. A mini-HDMI port is included for video output. A noise-canceling microphone is included in order to facilitate video conferencing. The built-in battery is a 30 watt-hour lithium polymer battery. Lenovo quotes 25 days of standby power, 150 hours of MP3 playback, up to ten hours web browsing, and ten hours of local video playback. David Pierce wrote for "The Verge", "I like almost everything about the ThinkPad Tablet 2. It's a handsome, well-made device that offers excellent battery life, does everything I'd expect a tablet to, and does it all well. It even does a few things I wouldn't expect from a slate – try running Photoshop or Steam on your iPad, I'll wait — and even if it doesn't do them especially well, its ability to masquerade as a "real computer" is still a big advantage. At the risk of beating a dead horse, this isn't a replacement for a Windows PC like the Acer Aspire S7 or Lenovo's own Yoga 13, but next to the other Windows tablets on the market it's clearly the best option.