| Local Name | Optimax 13 |
| Additional Information | Also known as Plum Z711-b |
| Technology | GSM / HSPA |
| 3G Bands | HSDPA 850 / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Speed | HSPA 21.1/5.76 Mbps |
| Announced | 2018, December |
| Status | Available. Released 2019, January |
| Dimensions | 250.8 x 158.8 x 10.2 mm (9.87 x 6.25 x 0.40 in) |
| Weight | 510 g (1.12 lb) |
| SIM | Dual SIM (Mini-SIM, dual stand-by) |
| Display Type | Li-Ion 4700 mAh, non-removable |
| Screen Size | 10.1 inches, 295.8 cm2 (~74.3% screen-to-body ratio) |
| Resolution | 800 x 1280 pixels, 16:10 ratio (~149 ppi density) |
| OS | Android 8.0 Oreo (Go edition) |
| Chipset | Spreadtrum SC7731 |
| CPU | Quad-core 1.3 GHz Cortex-A7 |
| GPU | Mali-400 |
| Card Slot | microSDHC |
| Internal Memory | 8GB 1GB RAM |
| Camera Features | LED flash |
| Video | 480p@30fps |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Bluetooth | 4.0, A2DP |
| NFC | No |
| Radio | FM radio |
| USB | microUSB 2.0 |
| Sensors | Accelerometer |
| Stand By | Up to 72 h |
| Talk Time | Up to 3 h 30 min |
| Colors | Black, White, Gold |