Model Number: VS1-#8403 Brand Name: Vs1 Key Specifications/Special Features: Length 93mmWeight of device 136gWeight of set 435gWorking voltage 3.3-4.2VWidth 60mmDeepness23mmBattery capacity 2000mAhColors black/blue/green/purpleCertifications CE, FCC and RoHS Directive-compliant Length 93mm Weight of device 136g Weight of set 435g Working voltage 3.3-4.2V Width: 60mm Deepness: 23mm Battery capacity 2000mAh Colors black/blue/green/purple Certifications CE, FCC and RoHS Directive-compliant