This laser pointer is highlighted by its multifunction and ultra-long light visibility. It can provides 1500m / 4921.3ft green laser in single spot or starry sky ligh in multi-spots. It is useful for decoration in performance or at party and for focusing ence's attention in sales or in large screen teaching. Features: Can change the green starry sky light by rotating the lens, can provides single light beam by remove the lens. Green starry sky light is suitable for party and stage performance. Single spot light is suitable for sales pointing and large screen teaching. 1500m / 4921.3ft ultra-long light visibility, suitable for tour guide and astronomical star pointing. Tail switch design, one press for long lighting, convinient to control. Specifications: Label power: 5mW (floating) Light visibility: 1500m / 4921.3ft Start time: 3 seconds Rechargeable battery (not included): 16340 lithium battery Battery capacity: 600mA Working time: 30minutes-1hour Material: Aluminum alloy Laser color: Green Wavelength: 532nm Color: Black Item size: 12.0 * 2.1cm / 4.7 * 0.8in (H * D) Item weight: 64.0g / 2.3oz Total size: 12.0 * 2.3cm / 4.7 * 0.9in (H * D) Total weight: 65.0g / 2.3oz Note: 1. Laser has serious harm to people's eyes. Do not point to someone else. 2. Continuously light the pen for 30 seconds would shorten the pen life. 3. Please take out the battery before leaving the laser pen unused. Package list: 1 * Laser pointer