... Inner Battery: sealed rechargeable lead-acid battery, free maintenance, up to 2500 mA, can be recharged for more than 300 times ... LED: superbright, pure white, energy saving, durable, luminous range up to 100m.4) Outer Plastic: completely new ABS, strong, waterproof, anti-weathering ... one time for each three-month stock time so as to keep the battery function properly.Guarantee:Six months guarantee ...