Product comes in travel lock mode. To unlock hold down + and - button for 5 seconds.<br /><br />The EGO e3.5 Male Stimulating Ring is rechargeable&#44; with complete charge in 3 hours. Has a premium rechargeable lithium ion battery. The e3.5 is unscented&#44; non-porous&#44; and hypoallergenic. Has a virtually seamless satin finish. The EGO e3.5 features intense incremental speed control and is whisper quiet. Has instant on/off button and a security travel lock. Also features an LED indicator light. It's 100% waterproof&#44; silicone&#44; and play area. The e5 is powered by PowerBullet. Includes a universal USB cord. One year warranty. Optional 10 year replacement guarantee. 1.25/3.25 cm (ring). 2.5 x 2.5/6.25 cm x 6.25 cm (overall).