This sloar-powered LED flashlight keychain functions perfectly. Placed in direct sunshine, it will be recharged quickly. One recharging of 10 minutes in strong sun light will enable it for around 7 hours consistent use. A permanent on-off switch is used. The plastic parts can be of any Pantone colors, solid or translucent. Customer logos can be printed on the round back diametered 33mm. The overall dimensions are 81X41X18mm. Per piece weight is 23 g including small inner box.