Winner
Updated November 2026
Data from the official Aqara and ULTRALOQ sites.
2026 verdict
Aqara Smart Lock U400 edges out ULTRALOQ Bolt Mission in 2026, led by price and Lock/Unlock system.
The comparison tilts its way because of price and Lock/Unlock system, with its broader overall balance keeping it in front. The only strong reason to choose ULTRALOQ Bolt Mission is if battery life is more important to you than the overall verdict. In practical terms, Aqara Smart Lock U400 is the easier product to recommend.
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| Feature | Aqara Smart Lock U400 | ULTRALOQ Bolt Mission | Winner |
|---|---|---|---|
| Price | $269.99 | $299.99 | Aqara Smart Lock U400 |
| Battery Life | 6 months | 8 months | ULTRALOQ Bolt Mission |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Bluetooth, Passcode, NFC Tag, Physical Key | Aqara Smart Lock U400 |
| Rating | 4.2 | 4.2 | Tie |
| Weather Resistance | IP65 | IP65 | Tie |
| Connectivity | Bluetooth, Thread Protocol, Other | Bluetooth, Thread Protocol, Other | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| One-Time Password | YES | YES | Tie |
| Periodic Password | YES | YES | Tie |
| Emergency Fingerprint | NO | NO | Tie |
| Doorbell | NO | NO | Tie |
| Local Control | YES | YES | Tie |
Winner
$269.99
- + Price: $269.99
- + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
- - Battery Life: 6 months vs 8 months
$299.99
- + Battery Life: 8 months
- - Price: $299.99 vs $269.99
- - Lock/Unlock System: Remote, Bluetooth, Passcode, NFC Tag, Physical Key vs Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
Frequently Asked Questions
Which is better overall: Aqara Smart Lock U400 or ULTRALOQ Bolt Mission?
Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for price and Lock/Unlock system.
What is the biggest difference between Aqara Smart Lock U400 and ULTRALOQ Bolt Mission?
Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while ULTRALOQ Bolt Mission lists $299.99.
Which one looks better on price?
Aqara Smart Lock U400 is listed at $269.99, while ULTRALOQ Bolt Mission is listed at $299.99. Aqara Smart Lock U400 (better spec).
Who should buy Aqara Smart Lock U400?
Choose Aqara Smart Lock U400 if your priority is price and Lock/Unlock system and that matters more than battery life.
Who should buy ULTRALOQ Bolt Mission?
Choose ULTRALOQ Bolt Mission if your priority is battery life and that matters more than price.
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