[. . . ] Do not modify darts or dart blasters. CAUTION: AGES 6+ TM Be sure to read and follow all instructions carefully before using this product. BARREL SLIDE LIGHT BEAM DART STORAGE BATTERIES REQUIRED Alkaline batteries recommended. [. . . ] This works best in low-light conditions. 4 IMPORTANT: BATTERY INFORMATION CAUTION: 1. Use only batteries specified and be sure to insert them correctly by matching the + and ­ polarity markings. Do not mix old batteries and new batteries or standard (carbon-zinc) with alkaline batteries. Should this product cause, or be affected by, local electrical interference, move it away from other electrical equipment. [. . . ] DO NOT RECHARGE OTHER TYPES OF BATTERIES. Product and colors may vary. [. . . ]