This product is usually sold with a laser pointer.
• Type: 16340 GH Li-ion
• Nominal voltage: 3.7V
• Actual capacity: 700mAh
• Battery resistance: < 50mΩ
• Dimensions: ¢ 15.5 mm x 33.6 mm
• Net weight: 16g
Notes
1) Don't store these batteries in damp places.
2) Don't make it overcharge or over-discharge.
3) It should be charged for one time at least in six months.