TM15 is the world's smallest and brightest rechargeable searchlight; Adopts 3x CREE XM-L2 (U2) LED; Thermal protection circuit prevents overheating; Compatible with both 18650 Li-ion and CR123 batteries; Intelligent charging circuit with status detection, recharge easily, safely and quickly; Exceptionally long runtimes using 4 x 18650 or 8 x CR123 batteries; Capable of using 1 x 18650 or 2 x CR123 batteries in emergency situations; Innovative single button two-stage switch provides a user-friendly interface (patented); Integrated power indicator light displays remaining battery power (patented); Power indicator secondary function displays battery voltage (accurate to 0.1V); Coated mineral glass resists scratches; Aluminum reflector ensures a consistent and powerful beam; Stainless steel retaining ring protects the core components from damage; Constructed from aircraft grade aluminum alloy; HA Class 3 Military grade hard-anodized; Waterproof in accordance with IPX8 (two meters submersible); Dimensions: Length: 16mm / Head diameter: 60mm / Tube diameter: 50mm