Publicly stated differences
Not bench tested: cycle times, protection claims, battery capacity, motor configuration, and integrated functions below are manufacturer-published claims.
Swipe horizontally to compare all columns.
| Claim | K5 | K6 |
|---|---|---|
| Splice / heat time | 8 s / 18 s | 6 s / 16 s |
| Battery | 7800 mAh | 7800 mAh |
| Controls | Industrial CPU; preheating support | 5-inch touch display; Bluetooth phone app control |
| Mechanism / fixture | Not confirmed on reviewed page | Six-motor autofocus; three-in-one fixture claimed |
| Integrated test functions | Not confirmed on reviewed page | Optical power meter and VFL claimed |
| Protection claim | Water, dust, and drop resistance claimed | Not normalized from the reviewed source |
See how these claims compare with Fujikura, Sumitomo, and INNO official specifications
What the comparison must test
- Alignment consistency and splice-loss distribution across a defined sample set.
- Actual end-to-end workflow time, not just the displayed splice cycle.
- Heater consistency, electrode life, calibration workflow, and error recovery.
- Battery runtime under a repeated splice-and-heat workload.
- K6 app permissions, offline behavior, firmware dependency, and whether integrated OPM/VFL functions replace dedicated tools.
- Chassis and environmental claims under documented, non-destructive field checks.
Primary public sources
- iGuangyan K5 fusion splicer page, accessed July 21, 2026.
- Kaiteng K6 fusion splicer page, accessed July 21, 2026.