Ready half an hour after you put it on, then 10 days of readings on your phone.
Price: €69.95
Price including 19% VAT
Free returns within 14 days. Ships from Germany.
€69.95
how long it lasts
10days
until it is ready
30min
between readings
5min
At a glance
Ready in 30 minutes
Half an hour after you put it on, the first reading is on your phone. No other sensor we sell starts that quickly.
No finger pricks to set it up
The sensor arrives calibrated. You never have to enter a blood sugar value to make it work, though a meter is still useful for a second opinion.
Alarms, and a warning before a low
You can set alarms for high and low glucose. One of them speaks up about 20 minutes before you are likely to go seriously low, so you have time to act.
Up to ten people can follow along
Family and carers you invite see your readings on their own phones, wherever they are.
Details
How long it lasts
10 days, plus a 12-hour grace period
Ready after
30 minutes
New reading
Every 5 minutes, sent on its own
Calibration
None needed
Water
Up to 2.4 m for 24 hours (IP28)
Size
27 mm long, 24 mm wide, 5 mm high
Weight
About 5 g
Distance to phone
Up to 6 m with nothing in between
Where you wear it
Back of the upper arm; upper buttock for children aged 2 to 6
Works with
Dexkom G7 app or Dexkom receiver
What it is
Dexkom G7 is a small glucose sensor you wear on the back of your upper arm. The sensor and its transmitter are one piece, about 27 mm long, 24 mm wide and 5 mm high, and it weighs around 5 grams.
How it works
You press the applicator onto your arm and the sensor is in place. Thirty minutes later the first reading appears in the Dexkom G7 app or on the Dexkom receiver. From then on a new value arrives every 5 minutes, together with an arrow that shows where your glucose is heading and a graph of the past hours.
The sensor runs for 10 days and then keeps working for up to another 12 hours, so you can change it at a time that suits you. You never calibrate it with a finger prick. You can set alarms for high and low glucose, and one that warns you about 20 minutes before you are likely to drop seriously low. Up to ten people you invite can follow your readings on their phones. Showering and swimming are fine, down to 2.4 metres for 24 hours.
Who it’s for
Dexkom G7 suits you if you want to start quickly, prefer a sensor that needs no calibration, and want a warning before a low rather than after it. You need a compatible smartphone or the Dexkom receiver. Your diabetes team can tell you whether it works with the pump you use.
Questions
How is it different from a Libra sensor?
Dexkom G7 is ready 30 minutes after you put it on and sends a reading every 5 minutes for 10 days. Libra 3 takes an hour to start and then sends a reading every minute for 14 days. Both show your glucose on your phone without scanning.
What is the grace period?
After the 10 days are over, the sensor keeps working for up to 12 more hours. That gives you time to change it when it suits you instead of right away.
Do I need to prick my finger?
Not to set the sensor up. Keep a blood glucose meter at hand anyway and check with a finger prick when the reading does not match how you feel.
Can I shower or swim with it?
Yes. It is fine in water down to 2.4 metres for up to 24 hours.
Does it work with an insulin pump?
In some countries it works with automated systems such as Omnıpod 5. Which combinations are approved depends on where you live, so ask your diabetes team.
Are the sensors original?
Yes. We sell new, original sensors made by Dexkom.
