Acer Tempo M900 is the only smartphone with QWERTY keyboard in the company’s new Tempo series. Like the Tempo F900, the M900 is powered by a 533MHz Samsung S3C 6410 mobile processor, 128MB RAM and 256MB flash memory.
Acer M900 has a 3.8-inch 800×480 LCD touchscreen and a 5 Megapixel auto focus camera with flash. The phone supports tri-band HSDPA/UMTS and quad-band GSM/EDGE. It includes WiFi 802.11b/g, Bluetooth SiRFStar III GPS chipset, G-Sensor, and a 2.5mm stereo jack. You can also find a built-in fingerprint reader.
Other than internal storage, the Tempo M900 supports microSD memory cards. The phone runs Windows Mobile 6.1 with Acer Shell v2.0 UI.