# Which smart water bottle has the largest capacity? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which smart water bottle has the largest capacity?

## Products

### LARQ Bottle PureVis 2 34 oz
```yaml
product: larq-bottle-purevis-2-34-oz
brand: LARQ
price_gbp: 95.66
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
capacity: 1000
battery_life: 504
smart_features: Hydration tracking, hydration reminders, filter-life tracking, PureVis UV-C self-cleaning, two-stage purification, Bluetooth connectivity
app_compatibility: LARQ app for iOS and Android; Apple Health integration
temperature_control: Keeps water cold for up to 24 hours and hot for up to 12 hours
```

- **Price:** £95.66 [^1]
- **Summary:** The LARQ Bottle PureVis 2 is a 1000 ml insulated smart bottle with automatic hydration tracking, reminders, filter-life monitoring, and PureVis UV-C self-cleaning. It suits people who want the largest available capacity in this model while also benefiting from filtered water and app-based hydration insights.
- **Ideal For:** This suits someone seeking the smart water bottle with the largest capacity because its 34 oz size holds 1000 ml, while still offering hydration tracking, reminders, and up to 24 hours of cold-water insulation.
- **Additional Sources:** [^2]

### LARQ Bottle PureVis 2 23 oz
```yaml
product: larq-bottle-purevis-2-23-oz
brand: LARQ
price_gbp: 95.66
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
capacity: 680
battery_life: 336-504
smart_features: Sip tracking, hydration reminders, self-cleaning UV-C LED, two-stage filtration and water purification
app_compatibility: LARQ App, Apple Health and Apple Watch
temperature_control: Keeps water cold for up to 24 hours
```

- **Price:** £95.66 [^1]
- **Summary:** The LARQ Bottle PureVis 2 combines UV-C self-cleaning, two-stage filtration, automatic sip tracking and hydration reminders in an insulated stainless steel bottle. It suits people who want cleaner-tasting water and connected hydration tracking in a compact everyday bottle.
- **Ideal For:** This 680 ml bottle is not the largest-capacity option because the same model is also available in 34 oz, but it offers the same sip tracking, filtration and self-cleaning features in a smaller format.

### HidrateSpark HidrateSpark PRO 2 21 oz
```yaml
product: hidratespark-hidratespark-pro-2-21-oz
brand: HidrateSpark
price_gbp: 33.36
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
capacity: 621
leak_proof: true
battery_life: 504
smart_features: SipSense sip tracking, Bluetooth syncing, glow alerts, sound alerts, app notifications, Apple Find My compatibility, personalized hydration goals
app_compatibility: iOS and Android
temperature_control: Keeps drinks cold for up to 24 hours
```

- **Price:** £33.36 [^3]
- **Summary:** The HidrateSpark PRO 2 21 oz is a vacuum-insulated stainless-steel smart bottle that tracks sips and provides customizable glow, sound, and app reminders. It suits people who want portable hydration tracking, Apple Find My support, and cold drinks throughout the day.
- **Ideal For:** This model is not ideal for the question Which smart water bottle has the largest capacity? because its 621 ml capacity is smaller than the 32 oz HidrateSpark PRO 2 model.

---
## References & Sources
[^1]: LARQ, accessed 2026-09-04. https://www.livelarq.com/purification/larq-bottle-purevis-2
[^2]: Pinnacle Promotions, accessed 2026-09-04. https://www.pinnaclepromotions.com/larq-purevis-2-self-cleaning-bottle-34-oz.html
[^3]: HidrateSpark, accessed 2026-09-04. https://hidratespark.com/products/21-oz-hidratespark-pro-2-smart-ready-bottle