Measurements Base diameter: 2 " (6 cm) Height: 8 " (20 cm) Luminous flux: 10 Lumen (10 Lumen) Shade width: 4 " (11 cm) Materials Shade: Polypropylene Body: ABS plastic Base/ Cover/ Reflector: Polycarbonate plastic Note Only use batteries that are intended for the product. Do not mix old and new batteries, different brands or types. Approved for use as outdoor lighting, IP 44. Built-in LED light source. The light source has a lifetime of approx. 25,000 hours. This corresponds to about 20 years if the lamp is on for 3 hours per day. Batteries should be handed in for recycling in accordance with local environmental regulations for waste disposal. Batteries sold separately. IKEA recommends LADDA rechargeable battery 2450 mAh HR6 AA 1.2V. 2 pieces required. Observe the polarity marks plus (+) and minus (?) and ensure correct battery insertion into the product. Do not deform, damage, dismantle, open or short-circuit batteries. Do not expose batteries to heat, fire or any type of liquid. WARNING! If a battery has been swallowed or if you suspect that a battery has been swallowed, seek immediate medical attention! Swallowing a battery may lead to severe injuries and death. In the event of a leaking battery, do not allow liquid to come in contact with skin or eyes. If exposed to liquid, rinse with plenty of water and seek medical advice. This product bears the CE mark. A built-in timer turns the lights on at the same time every day and keeps them on for 6 hours.