Some pre-sale items are shipped via international express, which may result in longer delivery times and additional shipping fees. Exact details will be shown at checkout.
We offer a 14-day return and exchange policy from the date you receive your item. Items must be unused, undamaged, with tags attached, in original packaging, and accompanied by proof of purchase.
We cover return shipping for quality issues, defective, damaged, or incorrect items. For other personal-reason returns, the customer is responsible for return shipping.
For full order cancellations within 14 days, the original standard delivery cost will be refunded. Partial returns generally do not include a refund of the original delivery cost.
Refunds will be processed within 5–7 business days after we receive and inspect your return. Please contact us before returning any item. For questions, email service@rockbrossport.co.uk.
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Consistent power data can help you pace efforts, compare training sessions and build a more repeatable approach to road cycling. The ROCKBROS PW806 spider power meter measures pedalling output at the crank and wirelessly transmits riding data to compatible bike computers, training software and mobile apps via ANT+ or Bluetooth. Built from 7075 aluminium, it uses a 110 BCD four-bolt design for compatible single- or double-chainring road bike setups. Magnetic charging, automatic wake and sleep functions and IPX7 water resistance make it practical for regular training throughout the season.
The PW806 measures cycling power across a specified 0–2800 W range and cadence from 20–240 rpm, providing useful riding data for pacing efforts and reviewing training sessions.
ANT+ and Bluetooth connectivity allow the power meter to transmit compatible riding data to supported bike computers, training software and mobile cycling apps.
The 110 BCD four-bolt spider is designed for compatible road bike crank assemblies using the specified EASTON interface, with support for compatible single- or double-chainring configurations.
The spider uses 7075 aluminium construction to provide the strength and rigidity required around the drivetrain while maintaining a performance-focused design.
Magnetic charging simplifies recharging between rides, while automatic wake and sleep functions help streamline everyday use. The IPX7 water-resistant rating provides additional protection when riding in wet conditions.
| Model | ROCKBROS × COOSPO PW806 |
| Product Type | Spider power meter |
| Interface | EASTON interface |
| Chainring Mount | 110 BCD, 4-bolt; compatible with single and double chainring setups |
| Claimed Power Accuracy | ±1% |
| Power Range | 0–2800 W |
| Cadence Range | 20–240 rpm |
| Supported Data | Power, cadence, left/right balance and pedalling smoothness |
| Wireless Protocols | ANT+ and Bluetooth |
| Battery and Charging | 130 mAh rechargeable lithium battery; magnetic charging; approx. 1.5–2 hours charging time |
| Battery Life | Up to approximately 300 hours |
| Water Resistance | IPX7 |
| Operating Temperature | −20°C to 50°C |
| Weight | Approx. 94–95 g, sensor only |
Approx. 94–95 g, sensor only
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