1. Watch Wireless Control
2. Fully Waterproof Battery
3. Wide Application Scenarios
4. Universal SUP Compatibility
- In stock
Seayoo Y04 SUP Thruster｜333Wh Battery｜4H Runtime｜Smart Watch Control
Quantity
Design Details
Care Guide
- After saltwater use, rinse all parts with fresh water.
- Fully dry before storage; keep battery dry sealed.
- Avoid heavy impact or long sun exposure.
- Remove battery if storing over 7 days.
Check watch remote seal regularly for waterproof safety. - Do not disassemble motor or battery privately.
Delivery Information
Global shipping | Trackable parcel | Fast 5-7 days processing
Y04 – Lightweight Waterproof Thruster
Choose the Seayoo Y04 SUP Propulsion for its high‑power 350W motor, long‑lasting 333Wh battery, IPX8 full waterproof build, lightweight portable design and thoughtful safety features including an emergency start button and floatable battery, delivering stable, worry‑free power for SUP, kayaks and inflatable boats in all water conditions.
Power Performance
330W Rated Max 8kg Thrust
Ultra Portability
Only 1.24kg motor
Full Waterproof
IP68 fully submersible
Long Endurance
Top speed 8km/h, Up to 4h runtime
Technical Specifications
| Specification | Details |
|---|---|
| Rated Power | 350W |
| Rated Voltage | 48V DC |
| Max Thrust | 8.4 kgf (18.5 lbf) |
| Max Speed | 5.8 km/h, 7 km/h, 8 km/h (5.5 mph) |
| Noise Level | < 60 dB |
| Weight | 1.24 kg |
| Waterproof Rating | IPX8 |
| Control System | Wireless remote control, 3-speed adjustment |
| Safety Features | Auto shut-off, overheat protection, low battery alert |
| Connectivity | 2.4GHz wireless, 50m range |
Core Selling Points
Ultra-Light Modular Body, Stable Smooth Thrust
Modular lightweight design, motor only 1.24kg; single person can finish mounting & carrying easily. 3rd Gen FOC brushless controller, ultra-low noise, high energy efficiency, vibration-free riding experience.
IP68 Full Waterproof, Anti-Corrosion For Saltwater
Top IP68 waterproof rating, fully submersible, no rust damage caused by seawater splashing. Anti-rust industrial housing, long service life for frequent saltwater fishing.
Dual Safety Protection For All Water Activities
Front anti-tangle propeller guard blocks fishing lines and water plants from winding. Automatically cut off power when wrist remote falls overboard to avoid propeller injury.
Wearable Wrist Remote, Truly Hands-Free Operation
Wristband wearable controller, no handheld device required during cruising. 4-speed cycle adjustment with real-time gear and battery level reminder lights.
Battery Capacity
13Ah / 291.2Wh
4 hours every single charge
Universal Multi-Fin Mount Design
Standard fin box: Direct plug-and-play without extra accessories. US fin box: Dedicated matching bracket for tight, wobble-free lock.
Watch Wireless Control
- Wrist watch remote, hands-free operation
- Waterproof watch, easy speed adjustment
- Stable long-distance signal on water
Fully Waterproof Battery
- PX8 waterproof lithium battery pack
- Sealed battery compartment, safe for saltwater & submersion
- Large capacity, long continuous runtime
Wide Application Scenarios
- Lake leisure cruising, river sightseeing
- Coastal snorkeling, light surfing
- Fishing & water fitness training
Wide Compatibility
- Standard fin base, fits most stand-up paddle boards
- Quick install & detach, no extra tools needed
- Matches inflatable & hard-shell SUPs
BATTERY EMERGENCY BUTTON
If you forget to charge the remote watch or don't have it with you, the battery emergency button can still activate the thruster, preventing the situation where you lose control of the thruster midway and have to paddle back manually.
B2 Floating LiFePO4 Battery Specs
Cell Type
Floating LiFePO4 Lithium Iron Phosphate
Capacity
13Ah / 291.2Wh (Total 333Wh full system)
Battery Net Weight
2.73kg
Functions
LED power indicator, dual charge/discharge ports, emergency stop button
Pick Your Perfect Thruster — Y01 / Y02 / Y04 Full Comparison
| Comparison Item | Y04 Current | Y02 Mid-Range Model | Y01 High-Power Flagship |
|---|---|---|---|
| Motor Net Weight | 1.24kg Ultra-light | 1.1kg Lightest | 1.6kg Heavy-duty |
| Max Thrust | 8kg | 10.5kg | 13.5kg Strongest Output |
| Rated Power | 330W | 450W | 600W |
| Control Mode | Wrist wearable wireless remote | Handheld wired remote | Handheld remote + Forward & Reverse Gear |
| Recommended Pairings | B2 333Wh Floating LiFePO4 | B3 666Wh Large Capacity | B1 800Wh Super Large Capacity |
| Retail Price | $499 | $699 | $999 |
| Waterproof Rating | IP68 Full Submersible | IPX8 Waterproof | IPX8 Industrial Sealed |
| Core Advantages | Ultra-light, cost-effective, hands-free wrist remote, compact storage | Balanced power & weight, long factory battery runtime, offshore fishing oriented | Max heavy load, multi-person support, reverse gear, open sea long-distance travel |
| Best For Users | Solo beginners, budget casual paddlers, short lake fishing & sightseeing | Regular anglers, small kayaks, 1–2 person boards, medium coastal cruising | Multi-person large SUP, heavy gear transport, all-day offshore adventure |
Quick Selection Guide
Choose Y04 If You Are:
- Solo SUP beginners & weekend casual lake riders
- Budget users wanting lightweight wrist remote
- Short-term sightseeing & slow shore fishing within 2–4 hours
- Need compact gear easy to store in backpack or car trunk
Choose Y02 If You Are:
- Regular freshwater & saltwater anglers
- Frequently take medium-distance coastal trips with 1–2 people
- Prefer long runtime without extra battery upgrade
- Seek balanced power & portability at mid-range price
Choose Y01 If You Are:
- Professional water sports lovers & multi-person large SUP users
- Need to carry heavy gear, 2–3 riders, all-day offshore travel
- Require reverse gear for flexible positioning on open water
- Often sail against strong wind & big waves
What's In The Box
Everything you need to get started
1x
Y04 Electric fin
1x
B2 Lithium‑ion Battery
1x
Remote Control
1x
Charger
1x
Elastic Rope
1x
User Manual
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