Here's the side-by-side comparison of the three attributes you asked about:
| Attribute | Blueye X3 Ultra | Blueye X7 |
|---|---|---|
| Weight | 8,600 g (8.6 kg) | 20,000 g (20 kg) |
| Thrusters | 4 | 7 |
| Battery runtime | 5 h | 5 h |
blueyerobo... +5blueyerobotics.com ↗“mechanical.weight_g=8600 g”blueyerobotics.com ↗“Thruster-propelled ROV (4 thrusters)”blueyerobotics.com ↗“robot.battery_runtime_h=5 h”blueyerobotics.com ↗“mechanical.weight_g=20000 g”blueyerobotics.com ↗“Thruster-propelled ROV (7 thrusters)”blueyerobotics.com ↗“robot.battery_runtime_h=5 h”
In short:
- Weight: The X7 is roughly 2.3× heavier than the X3 Ultra — 20 kg vs 8.6 kg, consistent with the X7 being the larger inspection-class platform and the X3 Ultra being the portable mini-ROV.
- Thrusters: The X7 has 7 thrusters with 6 degrees of freedom, while the X3 Ultra has 4 thrusters.
- Battery runtime: Both list the same 5-hour battery runtime.
One other difference worth noting alongside these: the X7 is rated to 500 m depth versus 305 m for the X3 Ultra. blueyerobo... +1blueyerobotics.com ↗“500 m depth rating”blueyerobotics.com ↗“305 m depth rating”