Tips:UK Buyer: UK warehouse . Fast delivery (3-5 days) ;Other Buyer : China Warehouse. 2-3 weeks delivery.Specification for Dental Loupe: Portable LED headlightHigh intensity>15000—30000LuxContinuous run-time:>5 hourThe power of the LED bulb:1 WThe lifetime of the bulb:10000 hourAll loupes are optionalVery small volume and weightBattery pack weight:100gCharge voltage:AC110V/240V/50-60Hz