| 3.7V rechargeable battery designed for Pulsar Trionyx Binoculars Provides over 6 hours of continuous power Compact, lightweight build for easy portability Quick, simple installation and removal | Lithium?ion cell composition for efficient performance Includes one battery pack (unit count: 1) Protective cover included for safe transport Dimensions: 6.5 × 6.5 × 2 in; Weight: 120 g |