Shimano Ultegra FC-R8100-P HT II cranks with wattmetrom, 2x12, 50/34T

WARNING
For information about installing, adjusting, and replacing products that are not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this “user's manual” before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following directions should always be followed in order to prevent personal injury, damage to equipment, or damage to the surrounding area. The directions are classified according to the degree of danger or damage which may occur if the product is used incorrectly.
DANGER – Failure to follow the directions will result in death or serious injury.
WARNING – Failure to follow the directions could result in death or serious injury.
CAUTION – Failure to follow the directions could result in personal injury, or physical damage to equipment and the surrounding area.

DANGER
- Be sure to use the specified charging cable when charging the battery. Use of any other items could lead to fire, overheating, leakage, or damage to the connected PC.
- Prevent the charging cable from getting wet, and do not touch or hold it when it is wet or when your hands are wet. Failure to observe this could lead to problems with operation or to electric shock.
- Use an AC adapter with a USB port with a voltage of DC 5.0 V and a current value of at least DC 0.5 A. If you use an adapter with a current value of less than 0.5 A, the AC adapter may heat up, and this could lead to fire, smoking, overheating, damage, electric shock, or burns.
- Do not heat the battery or throw it into a fire. Failure to observe this could lead to fire or bursting.
- Do not use or leave the battery in hot or humid places where the battery may be exposed to direct sunlight, in a closed vehicle on a hot day, or near a heater. Failure to observe this could lead to leakage, overheating, or bursting, resulting in fire, burns, or other injuries.
- Do not disassemble or modify the battery; also, do not directly apply solder to the battery terminals. Failure to observe this could lead to leakage, overheating, or bursting, resulting in fire, burns, or other injuries.
- Do not allow metal terminals to come into contact with metal objects such as hairpins. Failure to observe this could lead to short-circuiting, overheating, burns, or other injuries.
- If fluid leaking from the battery gets into your eyes, immediately rinse the affected area with water without rubbing your eyes, and then seek medical attention. Failure to observe this could lead to blindness.

WARNING
- Do not disassemble or modify the product. This may cause the product to not operate correctly, and you may fall unexpectedly and be seriously injured.
- Before riding the bicycle, check that the crank arms are not cracked. If there are any cracks, the crank arm may break and you may fall off the bicycle.
- Be careful that parts of your clothing do not get caught in the chain during riding, otherwise you may fall off the bicycle.
- Always grasp the cable plug when connecting or disconnecting the charging cable. Failure to do so may result in fire or electric shock.
- Do not leave this product in an extremely high temperature environment, such as in a closed vehicle on a hot day, or near a heater. This may cause the built-in battery to explode, or flammable liquid or gas to leak from it.
- Do not subject this product to extremely low air pressure. This could cause the built-in battery to explode, or flammable liquid or gas to leak from it. There is no problem with air transport of this product.
- If the following symptoms occur, stop using the device and contact the place of purchase. Fire or electric shock may occur.
* If pungent smoke comes out of the AC plug or the plug is heating up.
* There may be a poor connection inside the AC plug.
- Do not touch the device, bicycle, or AC adapter if there is thunder during charging with an AC adapter with a USB port. Electric shock may occur due to a lightning strike.
- Do not use a USB hub to connect the cable to the PC's USB port. Charging failure or fire due to overheating may occur.
- Be careful not to damage the charging cable. Do not damage them, modify them, forcibly bend, twist, or pull them, place them near hot objects, place heavy objects on them, or tightly bundle them together. Using them in a damaged state may result in fire, electric shock, or short-circuiting.
- If the battery does not fully charge after 4 hours of charging, stop charging. Failure to observe this could lead to fire, bursting, or overheating.
- When disposing of this product, follow all federal, state, and local environmental regulations, as it contains a battery. Disposal of this product into a fire or a hot oven, or mechanically crushing or cutting it, may result in an explosion of the built-in battery.
- Do not immerse the product in fresh water or salt water, etc., and prevent the terminals from getting wet. Failure to observe this could lead to fire, bursting, or overheating.
- Do not use the battery outside of the specified operating temperature ranges. If the battery is used or stored at temperatures outside of these ranges, fire, injury, or problems during operation may occur. The operating temperature ranges are shown below.
1. During discharging: -10 °C – 50 °C
2. During charging: 0 °C – 45 °C
- Do not subject the product to strong impact or throw it. Failure to observe this could lead to bursting, overheating, or problems during operation.
- Do not use the battery if it exhibits leakage, discoloration, deformation, or other atypical signs. Failure to observe this could lead to bursting, overheating, or problems during operation.
- If leaking fluid gets on your skin or clothing, clean it off immediately with clean water. The leaked fluid may damage the skin.
- Keep the magnet included with this product away from magnetic cards, medical devices, inspection instruments, etc. This may cause data loss or malfunction.

CAUTION
- Be careful not to touch the gear teeth. There is a possibility of injury.
- Store in a safe place out of reach of small children to prevent accidental swallowing.
- This product contains a powerful magnet and should be handled with care. There is a danger of getting your hand or fingers caught and injured.
- Prevent grease from adhering to the metal terminals. This may cause conduction failure.
- Do not leave the charging cable connected during maintenance.