After hard work, it is really a rare enjoyment to enjoy the sunshine. Sufficient sunlight every day can obtain more vitamin D, reduce the risk of melanoma death, prevent heart disease and stroke, enhance the immune system and brain function, reduce the risk of breast cancer, and prevent skin cancer.

However, this does not mean that we can bask in the beach for a whole day, with excessive ultraviolet radiation It will cause damage to our skin, and even cause skin cancer in serious cases. After running in the mountains for three hours at the weekend, my hands were very sunburnt. Even if I applied sunscreen, it was useless. Therefore, it is very necessary to have a portable device that can prompt the intensity of sunlight at any time.

In 2015, SunFriend developed a UVA+B SunFriend wearable UV bracelet This bracelet was exhibited at CES It can provide the current UV index in real time. This is not just a simple crowdfunding game product, but a genuine research and development team. The inventors Shahid Aslam and Karin Edgett won the Best Consumer Product Award and the Most Popular Voting Award in the 2011 "Create the Future Contest" held by NASA TechBriefs. It can be seen that UV protection is the focus of attention, and it is also a function and direction that can not be ignored in the future intelligent wear.

In short, With its guidance, we can easily arrange the afternoon time.

appearance

The bracelet received is blue with a yellow watchband, giving a fresh and natural feeling.

The bracelet is made of plastic and the watchband is made of nylon. The length can be adjusted to suit different wrists. It feels good to wear and fits the wrist.

    The size of the watch body is 5.7cm * 2.5cm, and the size is moderate. You can have an intuitive feeling from the comparison of Apple Watch. It has waterproof function, and the actual measurement results are good. After one minute of flushing, the normal use will not be affected. It is publicized that it can be used in swimming. I hope that the actual measurement can be done in the future.

    In Sunfriend's internal structure, one circuit board, photosensitive element and ultraviolet sensor, four buttons and one button battery are enclosed in a transparent plastic shell This packaging level should be relatively high to meet the waterproof effect. Different from the online view, I observed that the button battery can be disassembled, but the basic waterproof property is lost. It depends on the user's choice whether to choose the next generation product or abandon the waterproof daily use.   

Basic settings

The bracelet has 11 LED lights, an UV sensor and four buttons. The UV sensor is used to detect the current light intensity and UV index in real time. The four buttons are: switch, skin sensitivity level setting, UVA+B index test, UVI index test. The SET SENS button needs to be set by the user according to his skin sensitivity, which will be reduced from 1 to 11 in turn. There is no clear setting instruction and guidance from the official, so everyone can only find the appropriate level according to his own situation and multiple settings.

After setting the sensitivity level, you can actually test its effect in the sun. Test the current UVA value according to UVA+B to judge the impact of current sunlight exposure on users. The higher the index, the more attention should be paid to sunscreen measures. When all 11 lights are on, it means that there is enough sunshine to protect yourself from the sun or take a rest in the room. The UVI index is independent of the sensitivity setting.

Actual test:

Due to limited time and local weather, only two tests were conducted.

12:18 ° in sunny days

The sensitivity is set to 5, the sunshine lasts for 30 minutes, and the UVA+B index is 4. There is no early warning, basically no impact, and the skin has no discomfort. You can continue to enjoy the sunshine.

    The sensitivity is set to 5, the sunshine is 90 minutes, and the UVA+B index is 6. There is no early warning, but you need to pay attention to the rest properly.

  summary

The product has been used for a short time and has not been tested many times. However, the basic functions and design can be introduced completely. The product is innovative enough, but its playability is not high.

advantage:

1. For women who often work outdoors, this bracelet can meet their needs.

2. It has waterproof function and is practical for swimming and other activities.

Disadvantages:

one   The appearance design and overall material can be improved.

two   The sensitivity grading settings are not clear, and the user's learning process is too long.

three   Single function.

Suggestion:

1. Combine with other intelligent wearable devices, for example, design an independent APP to connect the bracelet with the mobile phone to increase playability and ease of use.

2. Wearing products with single function are difficult to occupy the market. After all, users only need a bracelet or watch on their wrist.