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TRUE Series Headlight. • Lithium Ion Battery. Handlebar Bracket. •. • Helmet Mount. Go-Pro Adaptor. ⚫ USB Charging Cable. Manual. SERFAS®. لك. This manual is intended to help get you started on your journey down that well lit path. USL-250 only has 3 solid functions: high, medium, and low. Daytime Flash. 1000 up to 18 hrs. Low Flash. 150 up to 50 hrs. CHARGING TIME: 1.75 HRS At 2 Amp. TSL-750M. MODE. LUMEN. RUNTIME. High. 750 up to 2 hrs. Thank you for choosing a Serfas True series headlight! * For using this product safely, conveniently and keeping it well-preserved, please read this manual