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  • TWIN-C for her Le Double

TWIN-C for her Le Double

Twin-C complies with all your desires.

Twin-C is a unique connected jewel, available in bracelets, bag accessories, key rings ... or tied on the wrist with a silk scarf, designed in the greatest French craft tradition, to magnify women.

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TWIN-C for her Le Double

  • Your new life companion


    TWIN-C supports you on a daily basis, by measuring all the environmental factors likely to attack your body, in particular your skin and hair.


    Connected to the IEVA mobile application, it becomes a life coach that protects you from the harmful effects of environmental stress by guiding you on the actions to follow to preserve your beauty capital.


    A jewel - 2 uses


    Nomadic mode: Worn on your wrist, hung on your bag or as a key ring, TWIN-C is in nomadic mode. It measures and analyzes in real time the environment around you as well as your physical activity to allow you to act...


    Mode Indoor : Placed on its charging base, TWIN-C switches to Indoor mode and becomes a great tool for analyzing the air quality of your home.


    The functions


    The Journal: Find every day the summary of the data measured by your TWIN-C, accompanied by perfectly personalized advice, tips and recommendations...


    Le Blog : Retrouvez une multitude d’articles, de recettes, d’astuces, … sur des thématiques variées allant de la beauté au lifestyle, en passant par la nutrition et le bien-être


    Votre Rituel Beauté : Retrouvez quotidiennement les étapes d’un rituel beauté en parfaite adéquation avec votre environnement.

  • Product recommendation


    Thanks to this continuous data capture and the use of artificial intelligence algorithms, IEVA offers you a level of expertise never before equaled.


    Every day, TWIN-C allows a very high precision diagnosis to offer you a beauty ritual combining IOMA products in perfect harmony with your environment and your skin needs.

  • Environmental measures


    Behind the TWIN-C jewel hides a concentrate of technologies integrating sensors capable of continuously quantifying your environment, to understand its impact on your organism.


    The sensors measure:


    air pollution (fine particles, ozone, carbon dioxide, etc.)
    ambient noise
    UV-A, UV-B and UV index


    The IEVA application allows the user to visualize these various data collected and to know the environment in which he operates. She guides him in his daily life with recommendations for actions to be implemented to protect himself from the effects of environmental stress.

  • Find all the useful information for understanding and anticipating environmental factors on the IEVA mobile app available on


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  • Dimensions

    Dimensions: jewel 45x38 ø x12.5 mm, hanger 50 mm, loop 38 mm ø

    Material: silver metal, silicone hook, metal buckle

  • Sensors

    Volatile organic compounds (VOC) and carbon dioxide (CO2) sensor

    Noise level sensor

    Temperature and humidity sensor

    Brightness sensor

    UV-A and UV-B sensor

    Activity sensor


  • Battery

    Lithium polymer (LiPo), Autonomy 5 to 6 days, Charging 3h +/- 30mn

  • Compatibility

    Application available Google Play / Apple Store iOS 10.0 or higher Android 4.1

  • Connectivity

    Bluetooth Low Energy BLE 4.2

  • Your loyalty
    rewarded 1€ spent =
    1 reward point

  • 100% secure
    payment Visa, Mastercard, Amex
    Paypal, Alipay, Giropay*

  • Samples
    offered* Try our products
    before buying

  • 48h free delivery
    from 60€* Straight to your door
    in less than 72h

  • Free product
    returns* Your product
    reimbursed 100%

  • Customer
    Service Do you have
    a question?

Quality commitments

Leather work
The nobility of an artisanal know-how.
IEVA works with the best craftsmen in France, well-kept secrets of the big names in luxury.

Advanced engineering
Revolutionary patented technology.
Born on the premises of IEVA, the microsystems encapsulated at the base of TWIN-C are the culmination of more than 10 years of research and development on personalized beauty.

Jewelry care
To clean Twin-C, use a soft, dry cloth. Clean the bracelet with a clean cloth dampened with nourishing leather.

All IEVA products are guaranteed for 2 years.

TWIN-C for her Le Double

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