Oppo Watch 4 Pro vs RoverPC E5
| Type | - | Touch |
| Dimensions | 50.10 x 38.30 x 12.85 mm | 111.80 x 60.50 x 15.80 mm |
| Weight | 52.30 g | 108.00 g |
| Display size | 1.91" | 2.80" |
| Display | Color / LTPO AMOLED 378 x 496 px (1.91") 327 ppi | Color / TFT 64k colors 240 x 320 px (2.80") 143 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) |  | 2G: 240 min. (4.0 h) |
| Stand-by (max.) | | 2G: 150 h. (6.3 days) |
| Standard battery | Li-Ion 570 mAhBuy powerbank
| Li-Ion 1150 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 32 GB | 128 MB |
| RAM memory | 2 GB | 64 MB |
| Memory cards | |  microSD |
| Operating system | - | MS Windows Mobile 5.0 |
| Processor | Qualcomm Snapdragon W5 Gen 1 SW5100 | Marvell PXA270M |
| Processor clock | 1700 MHz | 312 MHz |
| GPU | Adreno 702 | - |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | SingleSIM(eSIM) | |
| Announced | 3Q 2023 | |
| Other names | - | - |
| GSM frequencies | 850 900 1800 | 900 1800 1900 |
| UMTS | 850 900 1700 2100 | |
| LTE standard | | |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | nd | 2 Mpx |
| Resolution | nd | 1600x1200 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Additional | nd | - |
CAMERAS - FRONT
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | | v2.0 |
| HSCSD | | |
| HSDPA | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | class 10 |
| EDGE | | class 10 |
| Bluetooth | v5.0 | v1.2 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n | |
| WiFi frequencies | 2,4 GHz; 5 GHz | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | | T9 |
| Swype | | |
| e-mail client | | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | | MIDP 2.0 |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |