LedLenser K4R Rechargeable LED Keyring Torch Light | Pro & Industrial Range - YouTube
Ledlenser K4R Rechargeable USB Keyring Torch | 120 Lumens – Ledlenser UK
Ledlenser K4R - Rechargeable Super Bright LED Keyring Torch, 60 Lumen, Small Key Chain Light, Mini Light for Keys, Ideal for Dog Walks, Safety Light & Camping, Up to 1.5 Hour Battery