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Before scuba diving, check the gas composition in the cylinder, and input the correct corresponding values into the device. Failure to do so may
output an incorrect diving algorithm, which can pose a serious threat to your safety.
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The use of multiple gas mixtures, and/or performing of technical dives that require periodic decompression stops, and/or dives in closed
environments can lead to serious injury or even death.
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The device automatically calculates altitude changes via a barometer. The pressure data used by the decompression model is not affected by the
altitude or water surface pressure. However, when you enter a high-altitude area, your body will actively exhaust nitrogen due to the low
atmospheric pressure. Therefore, it is recommended that you reserve at least six hours for this process, in order to ensure that your body is fully
adapted to the high-altitude environment.
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The basic decompression algorithm model used by the device is the Bühlmann ZHL-16C Algorithm, which creates conservatism levels by using
the pressure difference coefficient. The default conservatism setting will vary by diving mode. Do not change the gradient factors (GF) values
unless you understand the possible consequences.
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The decompression information displayed on the device, including the NDL, stop depth, stop duration, and Time-to-Surface (TTS), are all
predictions. These values will vary with external conditions such as current depth, diving duration, and gas composition. In addition, the accuracy
of these predictions may be affected by the limitations imposed by the decompression algorithm. For example, an inappropriate ascend rate,
switching gas at the wrong time, and ignoring decompression stops can all lead to the display of inaccurate data.
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All reminders and alerts are subject to limitations. The system may send you a reminder or an alert when no issue occurs, or may fail to send a
reminder or alert when an issue occurs. Nevertheless, please fully respond in a timely manner to any reminder or alert, but do not rely too much on
them, as the best protection is your own judgement, skills, and experience as a diver.
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Violating a recommended decompression stop won't result in the device locking or other penalties. The device provides clear alerts for violating the
scheduled decompression plan, so that you can make decisions based on your training (including performing self-rescue, contacting your diving
insurance provider, or contacting a recompression chamber).
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Safety stops are optional. Ignoring them won't cause the device to lock or other penalties, and there will be no alerts. However, it's recommended
that you perform safety stops as scheduled, to reduce the risk of DCS.
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Apnoea training and testing are dangerous. Please make an appropriate training plan based on your own physical condition. Complete the training
and testing under the guidance of professional personnel. For safety reasons, do not train or test alone.
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During scuba diving, ascending too fast will increase the risk of DCS. Therefore, please maintain a safe ascend rate at all times.
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You should have received relevant training before using the compass feature for diving, so exercise caution when using it. Before diving, make
sure that the compass works properly, and be sure to calibrate it. Metal objects, permanent magnets, and motors may affect the accuracy of the
compass.
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When you've done using the device, clean or soak the device with clean water for a short while to prevent contaminants such as sea salt particles
or sediment from accumulating on the device, as this can cause button, pressure sensor, or speaker failure. If the speaker fails, you'll need to drain
water from the device after the preceding step, and air-dry the device for at least 24 hours, before checking whether the sound has returned to
normal.
Disposal and recycling information
The symbol on the product, battery, literature, or packaging means that the products and batteries should be taken to separate waste collection points
designated by local authorities at the end of the lifespan. This will ensure that EEE waste is recycled and treated in a manner that conserves valuable
materials and protects human health and the environment. For more information, please contact your local authorities, retailer, or household waste
disposal service or visit the website https://consumer.huawei.com/en/.
Reduction of hazardous substances
This device and its electrical accessories comply with local applicable rules on the restriction of the use of certain hazardous substances in electrical
and electronic equipment, such as EU REACH regulation, RoHS and Batteries (where included) directive. For declarations of conformity about
REACH and RoHS, please visit the website https://consumer.huawei.com/certification.
UK regulatory conformance
Hereby, Huawei Device Co., Ltd. declares that this device WDS-B19 is in compliance with the relevant statutory instruments in the UK. The full text of
the declaration of conformity is available at the following internet address: https://consumer.huawei.com/certification.
UK PSTI Compliance
This product meets the relevant security requirements specified in Schedule 1 of the Product Security and Telecommunications Infrastructure
(Security Requirements for Relevant Connectable Products) Regulations 2023. The full text of the PSTI Statement of Compliance is available at the
following website: https://consumer.huawei.com/certification.
EU regulatory conformance
Hereby, Huawei Device Co., Ltd. declares that this device WDS-B19 is in compliance with the following Directive: RED 2014/53/EU, RoHS
2011/65/EU. The full text of the EU declaration of conformity and most recent information about accessories & software are available at the following
internet address: https://consumer.huawei.com/certification.
RF exposure requirements
As recommended by international guidelines, the device is designed to comply with the limits established by the market that the device will be placed
on.
For the countries that adopt the SAR limit of 2.0 W/kg(Head) and 4.0 W/kg(Limbs) over 10 grams of tissue. The device complies with RF
specifications when the device is worn on the wrist and at a distance of 1.0 cm from your face.
Highest reported SAR value:
Head SAR: 0.04 W/kg.
Limbs SAR: 0.37 W/kg.
Frequency bands and power
Frequency bands in which the radio equipment operates: Some bands may not be available in all countries or all areas. Please contact the local
carrier for more details.
Wi-Fi 2.4GHz: 16.5 dBm, Bluetooth 2.4GHz: 12.5 dBm, NFC 13.56MHz: 42 dBμA/m at 10m, Watch Wireless Charger:110-119KHz: 42dBμA/m at
10m, 119-135KHz: 66 descending 10 dB/dec above 119KHz at 10m, 135-140KHz: 42dBμA/m at 10m, 140-148KHz: 37.7dBμA/m at 10m, UWB
7737.6 MHz - 8236.8 MHz: -1dBm/50MHz.
Please go to Settings > About > Regulatory information on the device to view the E-label screen.
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