The Lenovo A1000 comes with SIM support for Voice Calling. Use it like a tablet or a regular phone. The choice is all yours. Enjoy an enhanced audio experience for all multimedia including video, games and music. The A1000\\\'s dual stereo speakers are spaced apart for better stereo effects and oriented toward the front of the tablet for a richer user experience. Dolby audio enhancement allows louder, more natural, distortion-free sound – whether you\\\'re listening through headphones or the integrated speakers. Micro-USB for charging and connecting peripherals plus a micro-SD card slot for convenience and easy expandability. USB OTG (On The Go) allows your tablet to charge and read other devices, such as USB memory sticks (OTG requires a special, optional cable). The Lenovo A1000 tablet\\\'s HD display offers a clear and colorful viewing experience whether indoors or outside. The 72 percent color gamut screen delivers vivid video and pictures – better than many screens on more expensive tablets. At 10.7mm thin and only weighing 340g the Lenovo A1000 tablet is a perfect size for reading, listening to music, and web-surfing – and it can easily slide into a pocket when not in use. Video chat with friends with the 0.3M front-mounted webcam.