Hammer 4+ vs RoverPC M1
| Type | Bar (classic) | Bar (classic) |
| Waterproofness & dust-resistance | IP68 |  |
| Dimensions | 146.00 x 66.00 x 18.00 mm | 109.00 x 48.00 x 18.00 mm |
| Weight | 173.00 g | 98.00 g |
| Display size | 2.80" | 2.20" |
| Display | Color / TFT 240 x 320 px (2.80") 143 ppi | Color / TFT 64k colors 176 x 220 px (2.20") 128 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 1200 min. (20.0 h) | 2G: 180 min. (3.0 h) |
| Stand-by (max.) | 2G: 576 h. (24.0 days) 3G: 550 h. (22.9 days) | 2G: 133 h. (5.5 days) |
| Playback time (max.) | Audio: 21 h (0.9 days) | nd |
| Standard battery | Li-Ion 2000 mAhBuy powerbank
| Li-Ion 1000 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 128 MB | 64 MB |
| RAM memory | 64 MB | 32 MB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | miniSD |
| Operating system | - | MS Windows Mobile 2003 SE |
| Processor | MediaTek MT6276 | TI OMAP710 |
| Processor clock | - | 133 MHz |
| GPU | - | - |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(miniSIM, microSIM) | |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | 1Q 2019 | |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 900 1800 |
| UMTS | 900 2100 | |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo sensor model | SuperPix SP2519 | |
| Photo matrix | 2 Mpx | 1.3 Mpx |
| Resolution | 1600x1200 px | 1280x1024 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | | 176x144 px |
| Video formats | | 3GP, MPEG4, MJPEG |
| Additional | FF | - |
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 12 | class 8 |
| EDGE | class 12 | |
| Bluetooth | v2.1 | v1.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | |
| WiFi frequencies | 2,4 GHz | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v1.1 |
| 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 | POP3, IMAP4, SMTP | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AMR | |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Java | | MIDP 1.0 |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Vibrations | | |