Specifications:- Overall Dimension(LxWxH): 2 3/4" x 2 9/16" x 1 3/4" (7 x 6.5 x 4.4 cm)- Slot Size(LxH): 1 13/16" x 1/2" (4.6 x 1.3 cm)- Inner Height: 7/16" (1.08 cm)- Battery Capacity: 75 mAh- Led Power: 0.1 W- Battery Life: 12 hrs, non-replaceable- Net Weight: 0.15 Lb (0.07 kg). Package Contents:- 1x Led Ring Box. Notice: - Please ensure that your ring or jewelry should not have a height of more than 7/16" (1.08 cm).- Please note that the disposable battery inside the ring box is not replaceable and rechargeable.