Battery for SkyGolf SG1 SG2 SG201011703 SKY CADDIE SG2-USB 3.7V 1050mAh Capacity: 1050mAh / 3.89Wh Type: Li-ion Volts: 3.7V Size : 51.19 x 36.04 x 5.54mm Certificated with ISO9001, RoHS & CE;