A flexible device for carrying one or more sensors and able to at least partially enclose an appendage of a user, preferably comprising a wrist device that wraps around and can be worn on a users wrist. The device may include wireless communication means. The device has a support structure defining an inner (wearer contacting) side with a first section of flexible circuitry that can carry one or more sensors 105a. The sensors may include heat rate, blood pressure, blood glucose, temperature. An outer side of the support can carry more flexible circuitry and sensors 109a for an external environment. The sensors may include temperature, humidity, touch, strain. The device can comprise rigid portions and flexible portions A, B. The device may be controlled by user manipulation. The device may include accelerometers and GPS receivers.
