Charger Compatible with Ou-ra Ring Gen 4

About this product

• Multi-Size Compatibility: Works with Ou-ra Ring 4 sizes 7 to 13 - perfect for couples or families with different ring sizes. Spring-loaded design automatically adapts to fit your ring. Just align the groove with the front indicator, press down, and it locks in place. Not for Gen 3/5
• Charging Speed: reaches 80% in about 45 minutes, with a full charge in roughly 2 hours (final 20% uses trickle charging to protect battery health). LED pulses while charging; check the Ou-ra App to see when it's fully topped off
• Spring-Loaded Retractable Design: Spring-loaded prongs flex to securely hold any size 7-13 ring. The snap-on fit stays firmly in place - no slipping or constant adjustment needed. Yet it lifts off easily when charging is complete. No fiddling, just drop and charge
• Compact & Travel-Ready: Fits right into your pocket, purse, or travel bag. A true travel lifesaver when you don't want to pack multiple chargers. Works with any USB-C power source you already own. USB-C cable included
• Solid Build & Peace of Mind: Build quality feels solid and durable with a clean, modern look. Built-in over-current, over-voltage, short-circuit, and over-temperature protection. Great as a backup for your desk, nightstand, or office - always ready when you need it

From the Amazon listing, fetched 24 September 2026. Amazon’s words, not ours.