General Information Manufacturer Dantona Part Number SW-21 California Residents Physical Characteristics Dimensions 1.2" x 0.1" x 0.7" Weight (Approximate) 0.03 kg 0.06 lb Battery Information Battery Rechargeable Rechargeable Battery Chemistry Lithium, Lithium Polymer (Li-Po) Battery Capacity 120mAh Output Voltage 3.7 V