Bestpriceam&reg; New Mini Ultra-small S530 4.0 Stereo Bluetooth Headset Earphone Earbud for Iphone (Black) 4 hours talk time (music playback three hours / standby time 120 hours / working current &lt;15mA) Charging Power:AC input 110-240V DC output 5V (charging time / about 2 hours / charging voltage 3.7v) Wearing styles:Ear / Stealth headphones patented product Battery type:50mA rechargeable lithium battery Dimensions:3cmX1.7cmX1.2cm/1.19