2 LED book lights per arms, 2 arms.

20 for 2 two arms = 4 LED lights Can be attached to furniture using clips. Goose necks, flexible, soft padded clamp, eye care dual head clip Pick up 3 mins away from finch west station or on a few other stops on line 1 and line 2 Brand Number-One Colour 4LED Light source type LED Lamp type Light Emitting Diode Room type Office, Bedroom, Study Room Recommended uses for product Reading Power Source Battery Powered Switch type Push Button Theme Music Connectivity technology USB 【Widely Usage】-- Works as desk lamp, table light, clip on bed, on music book. Also for desktop, keyboard, piano, even great for travel, camping, hiking, climbing, BBQ 【Eye Protection】-- This reading light emits soft lighting, anti-glare, flicker-free, without ghosting to protects your vision and reduces eye fatigue 【Super Bright 4 LED Book light】-- Provides a soft bright light beam for reading or working in the dark without disturbing your families 【Two Modes】-- Low and high light setting. Dual head, each head have 1 switch and being able to use each light separately 【Two Power Supply】-- Powered by AAA Alkaline Batteries-Rechargeable (Not included) or a USB Power Cable (Included)