| Cartridge Capacity | 300 units |
| Basal Rate Range | 0.001 β 15 units/hr |
| Battery Type | Rechargeable lithium-ion |
| Water Resistance | IPX7 |
| CGM Compatibility | Dexcom G6, G7 |
| Approved Age | 2+ years |
| Weight | 3.95 oz (full cartridge) |
| Display | Color touchscreen |
Key Takeaways
- The t:slim X2 features a color touchscreen and 300-unit cartridge capacity
- Control-IQ technology automates basal insulin adjustments using Dexcom G6/G7 data
- Updateable via software β no hardware replacement needed for new features
- FDA-cleared for ages 2+ with Control-IQ and compatible with multiple CGM platforms
What Is the Tandem t:slim X2?
The Tandem t:slim X2 is a tubular insulin pump designed for people with Type 1 and insulin-dependent Type 2 diabetes. It stands out for its smartphone-like touchscreen interface, rechargeable battery, and ability to integrate directly with continuous glucose monitors (CGMs) to form a hybrid closed-loop system. Its flagship feature, Control-IQ Technology, automatically adjusts basal rates and delivers correction boluses based on real-time CGM readings.
Technical Specifications
| Feature | Specification |
|---|---|
| Cartridge Capacity | 300 units |
| Basal Rate Range | 0.001 β 15 units/hr |
| Battery | Rechargeable lithium-ion (micro-USB) |
| Water Resistance | IPX7 (1m for 30 min) |
| CGM Integration | Dexcom G6, G7 |
| Display | Color touchscreen |
| Weight | 3.95 oz (with full cartridge) |
| Approved Ages | 2+ years (Control-IQ) |
Control-IQ Technology Explained
Control-IQ is Tandem's automated insulin delivery (AID) algorithm. It predicts glucose levels 30 minutes ahead using CGM data and adjusts basal insulin delivery accordingly. When glucose is predicted to exceed 180 mg/dL, it delivers an automatic correction bolus. When glucose drops below 112.5 mg/dL, it suspends insulin delivery to prevent hypoglycemia.
Sleep and Exercise Activity Modes
Users can activate Sleep Activity mode for tighter overnight control (target: 112.5 mg/dL) or Exercise Activity mode to reduce correction boluses during physical activity. These modes give users meaningful customization within the automated system.
How It Compares to Other Pumps
| Feature | t:slim X2 | Omnipod 5 | Medtronic 780G |
|---|---|---|---|
| Form Factor | Tubed | Tubeless Pod | Tubed |
| CGM | Dexcom G6/G7 | Dexcom G6/G7 | Guardian 4 |
| Touchscreen | Yes | App/PDM | Yes |
| Software Updates | Yes (OTA) | Yes | Limited |
| Cartridge | 300u | 200u | 300u |
Who Should Consider the t:slim X2?
- People with Type 1 diabetes seeking automated insulin delivery
- Patients already using Dexcom G6 or G7 CGM sensors
- Users who prefer a touchscreen interface over button-based pumps
- Those who want a future-proof device with software update capability
Pairing with CGM Sensors
The t:slim X2 works seamlessly with Dexcom G6 and G7 sensors, which transmit glucose data directly to the pump every 5 minutes. This eliminates the need to manually enter glucose values for bolus calculations. For optimal performance, ensure your CGM sensor is properly calibrated and placed according to manufacturer guidelines. Explore MDS Diabetes for a curated selection of compatible Dexcom sensors and pump supplies.
Practical Tips for t:slim X2 Users
- Charge the pump daily β battery life is approximately 24 hours under typical use
- Change infusion sets every 2β3 days to maintain absorption and prevent infections
- Use the t:connect app to review insulin delivery history and share data with your care team
- Keep a backup supply of cartridges and infusion sets for travel