WEEMS & PLATH Hand Bearing Compass Model 2005 Colorful, sturdy, rubber housing protects compass. Lanyard serves as convenient neck or wrist strap. Directions for use included. Works at high altitudes. Graduated every 1, Numbered every 5, Accurate to within 1 Liquid-dampened two color card Photo luminescent night lighting quickly charges by placing compass momentarily under bright light. No batteries required