> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/android-devices/v640-series/v640m/v640m-installation-guide/specifications.md).

# Specifications

This chapter provides details on the power requirements, dimensions, and additional specifications of the 640m device.

## Unit Power Requirement

* Input power rating: 5V DC, 2A
* Rechargeable battery: 3000 mAh Li-Polymer
* Charging via USB-C or charging base

## Temperature

* Operating temperature: 0°C to 45°C (32°F to 113°F)
* Storage temperature: -20°C to 60°C (-4°F to 140°F)
* 30 day per year at 95%
* Must have resistance to condensation

{% hint style="info" %}
If the device is intended for use in environments where the temperature exceeds the specified operating range, integrators must take measures to control ambient conditions, ensuring that the product remains within the designated temperature range.
{% endhint %}

## Humidity

* Relative humidity: 5% to 90% relative humidity

## External Dimensions

* Length: 150 mm (5.90 in)
* Width: 78 mm (3.07 in)
* Depth: 19.3 mm (0.75 in)

## Weight

* Unit weight: 247

## Processor

* QUALCOMM ARM Cortex-A53 64-bit quad-core

## Display

* 4.3", 480 x 800 IPS LCD touchscreen

## Android Memory

* 1GB RAM + 8GB Flash or 2GB RAM + 16GB Flash
* Secure processor: 128 MB DRAM, 256 MB Flash

## SMART Card Reader

* Card conserving plated landing contacts

## Security

* 3DES and AES
* PCI PTS 6.1 approved

## SAM Requirements

* SAM slot
* D-000 format

## SIM/SAM

* 1 micro SIM
* 1 micro SAM or 2nd micro SIM

## Audio

* Loudspeaker, microphone
* Headset jack

## Camera

* Rear: 5 MP, auto-focus or 2MP fixed focus
* LED torch
* Front: 2 MP (optional)

## Communication

* BT 4.2 BLE (Bluetooth Low Energy)
* Wi-Fi 2.4GHz/5GHz (a/b/g/n) (5GHz support is an option)


---

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