The Navbow has an operating depth of 0–40 m (0–131 ft).

The machine body weighs 3,400 g and the battery weighs 1,100 g. The standard battery is 158 Wh, which requires prior airline approval under ICAO regulations. Remove the battery before security screening and carry it as hand luggage — it cannot be checked. A maximum of two batteries per person may be carried on board. Damaged or leaking batteries cannot be transported.

Battery life depends on usage conditions, user weight, and environment. Under typical conditions, the 158 Wh battery provides up to 60 minutes of use.

Store the machine and battery separately: 1) Store in a well-ventilated place at 0–45°C (32–113°F) and 65±20% RH. 2) Keep away from direct sunlight. 3) Keep away from high temperatures, open flames, and out of reach of children. 4) Keep away from strong magnetic fields. 5) To prevent corrosion, run the device for approximately 10 minutes once a month.

After use in salt or fresh water, clean the Navbow within 30 minutes: 1) Submerge the machine (with battery) in clean water for 20 minutes. Do not add any cleaning agents. Some bubbling is normal. 2) For a deeper clean, place the Navbow in a container of water and activate 'Self-Clean' in the SublueGo App. Direct the thruster outlet downward to avoid splashing. 3) Shake the device to dislodge any foreign matter. 4) Dry thoroughly with a clean, soft cloth. Remove the battery and store separately. 5) Dry the battery with a clean cloth and store in a cool, dry, ventilated place.

FREE (low speed): 1.0 m/s (2.2 mph). SPORT (medium speed): 1.5 m/s (3.4 mph). TURBO (high speed): 2.0 m/s (4.5 mph). Speed may vary depending on user weight, water conditions, depth, and any mounted accessories.

1) Store the battery separately at 25±5°C (77±9°F) and 65±25% RH, at a charge level of 30–60%, in a cool, dry, ventilated place. 2) Keep away from direct sunlight and high temperatures. 3) For long-term storage, check the battery at least every 6 months and charge to 60%. 4) Do not charge below 0°C (32°F). 5) Keep the battery at approximately 30% charge during transport.

Green staining may result from prolonged moisture exposure causing copper oxidation. Clean the electrode with a dry cloth and apply a small amount of petroleum jelly (Vaseline) to the contacts. If corrosion is severe, contact Sublue or an authorized service center.

Battery type: Lithium-ion. Rated capacity: 10,670 mAh. Nominal voltage: 14.8 V. Charging voltage: 16.8 V. Weight: approximately 1,100 g. Dimensions: L 171 mm × W 58 mm × H 60 mm.

No, corrosion is not normal. Clean the electrode with a dry cloth and apply a small amount of petroleum jelly (Vaseline) to the contacts. If corrosion is severe, contact Sublue or an authorized service center.

Battery swelling can result from prolonged discharge or overcharging. Store the battery at 25±5°C (77±9°F) and 65±25% RH, at a charge level of 30–60%. For long-term storage, check every 6 months and charge to 60%.

Contact Sublue or your local authorized dealer to purchase a spare battery.

Under normal use, the battery supports approximately 300 charge cycles. Capacity will gradually decrease over time with repeated use.

Yes. Some warmth during use is normal for lithium-ion batteries.

The battery is a lithium-ion type and its capacity reduces significantly in low temperatures. Operate within 0°C–40°C (32°F–104°F). Do not charge or use below 0°C (32°F).

Yes, this is normal. The battery is independently sealed. The Navbow uses contact sealing at the battery terminals only. If water is present on the battery or electrode, dry thoroughly with a clean cloth to prevent corrosion.

Approximately 3.5 hours to fully charge the 158 Wh battery.

Input: AC 100–240 V, 50/60 Hz. Output: DC 16.8 V.

Use the Navbow in open water environments such as the ocean, lakes, or swimming pools. Avoid rivers, ponds, or areas with poor water quality. Keep clothing, algae, ropes, nets, and debris away from the propellers.

Contact Sublue or an authorized service center for support.

No. The Navbow uses contact sealing at the battery terminals and a low-voltage circuit design with built-in circuit protection. The product has been tested and certified for safe underwater use.

First check for foreign objects in the propellers. Thrust also varies by speed mode — select the appropriate gear. Thrust may also be affected by user weight, body position, and water conditions.

If noise occurs during operation, check the propellers for foreign objects. Clean and maintain the device after each use. If noise is excessive, contact Sublue or an authorized service center.

Check for foreign objects, debris, or damage to the propeller blades or protective covers. If the issue persists, contact Sublue or an authorized service center.

Remove the battery and open the front end cover. Take out the propeller and clear any debris. For further assistance, contact Sublue or an authorized service center.

Yes. The motor will automatically stop due to overload protection.

Install the battery and push the multi-function switch forward for 1 second. The OLED display will show the Sublue logo, then press both left and right buttons simultaneously to begin.

Always use the dedicated charger or optional fast charger supplied by Sublue. Using third-party chargers may damage the battery and will void the warranty.

Yes, it is.

The Navbow has positive buoyancy in water and will not sink if released. However, adding external accessories may reduce buoyancy. Always use the included anti-loss leash as a precaution.

Turn on the multi-function switch — the OLED screen displays the remaining battery level.

Yes. Turn on the multi-function switch and press the start button to flexibly rotate your wrist and arm. For safety, please use it in shallow water and equip yourself with life-saving equipment. People under the age of 16 years should not use it.

The recommended operating temperature is 0°C–40°C (32°F–104°F). Do not use above 40°C (104°F).

The Navbow does not have a built-in camera, but it features a standard GoPro mount and a 1/4" underwater mounting point for attaching action cameras and other accessories.

486 mm × 327 mm × 177 mm (19.1 × 12.9 × 7.0 in).

The SublueGo App allows you to configure device settings, activate self-cleaning mode, enable safety lock, and switch between hand operation modes.

Yes. There is a standard GoPro mount under the front of the Navbow and a 1/4" underwater mounting hole on top for cameras, lights, and other compatible accessories.

Yes, the Navbow has slight positive buoyancy in standard water conditions without additional accessories. Adding external equipment such as cameras or weights may affect buoyancy.

Scan the QR code in the user manual to download the SublueGo App. Compatible with iOS 10.3 or above and Android 4.3 or above.

Push forward the multi-function switch for 1 second. Then the OLED display lights up the "SUBLUE" logo and enters the main interface.

Push forward the multi-function switch for 3 seconds. The OLED display turns off, showing the machine is off.

The Navbow has three speed modes: FREE, SPORT, and TURBO. When battery level drops below 50%, switch between FREE and SPORT only.

There are two methods: 1) Push the multi-function switch forward for 0.5 seconds and release. 2) While running in two-hand mode, release the right start button and press it twice quickly (approximately 0.45 seconds between presses).

When battery drops below two bars, the power icon flashes rapidly and the device vibrates three times. When battery drops below one bar, the power icon flashes rapidly and the device vibrates six times.

First, install a counterweight (if only one, place it in the middle hole), then completely submerge the machine in the water and fully exhaust the air, check whether the buoyancy state is up to expectation. If not, continue to increase the counterweight. Adjust three times until reaching your expectation.

Yes. Double-click the left start button while the device is on but not running to activate single-hand mode. Note: additional accessories are required and must be purchased separately from Sublue.

Attach the D-ring buckle before entering the water and connect the one-hand lanyard. Loop it through your diving suit waist strap and adjust to the appropriate length for your arm. Start with both hands, then release one hand once the lanyard is taut and tension is reduced.

In safety lock mode, the device cannot be operated. A safety lock icon will appear on the OLED screen. To unlock, use the SublueGo App.

Yes. When a fault is detected, an alarm icon will appear on the OLED screen every minute.

3 minutes