Gelrova [Batteries not included] 2-in-1 LED Backpack Set: Knight Expandable 25L Hardshell Cycling Backpack+ Evil Eye LED Crossbody Sling Bag, Black

Specifications

• Power It Yourself:​​ Please note: ​The backpack does not include a battery.​​ To light it up, you simply connect your own power bank (portable phone charger) to the built-in USB port. This gives you flexible and long-lasting power!
• 📦 Unboxing Tip! Please note: Your LED sling bag is safely packed insidethe main backpack. 🎒➡️👛 Be sure to open it up to find your awesome 2-in-1 combo!
• ​📱 APP-Controlled LED Animated Eyes​: Customize the bag’s LED lighting via the Gelrova APP (iOS/Android), selecting multiple "eye" animation designs directly from the app interface.
• 🎒 Expandable Hardshell Backpack (14.8L → 25.2L)​​: Main backpack expands from ​14.8L to 25.2L; dimensions ​36x18x48cm; weight ​1700g; features a dedicated ​15-inch laptop compartment​ and fits ​16-inch laptops​ in the main compartment.
• ​👝 Compact LED Sling Bag (4.8L Capacity)​​: Crossbody bag dimensions ​32.5x21x9.5cm; weight ​600g; capacity ​4.8L; synchronized with the backpack’s APP-controlled LED animations.
• 💻 Practical Storage Design​: Backpack includes a dedicated padded sleeve for ​15-inch laptops; main compartment accommodates ​16-inch laptops.