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Technical Specification

* Ring body material: 316L surgical stainless steel
* Light source: 168 energy safe ultra-thin single color LED
* Lighting time: 15 seconds after rotation (5 seconds when battery is low)
* Battery specifications: 10mAh, ultra-thin rechargeable lithium polymer battery (improved from 8mAh)
* Operating time: 450 activations (3-6 days)
* Battery life: 3 years (battery replacement will be sent to the home country for repair and will cost approximately 10,000 yen. Only customers who purchased through us can have it replaced at our office.)
* Charger: Wireless charger pad (USB-AC universal adapter sold separately)
* Charging time: 3 hours
* Time setting: Button on charger pad
* Water resistance: 30m (tested in shower, bath, swimming and fishing)
* Warranty: 1 year

* Weight: Approx. 15g (Prototype. Specifications are subject to change without notice)

<Size>
* Width: 14mm
* Thickness: 3-3.5mm
* Inner diameter: 16.9-23.8mm
* US ring size: 6.5-13US