Dual 350° Rotatable Head Rechargeable Desk Fan, Quiet Brushless USB Portable Air Circulator, Small Personal Cooling Fan for Bedroom Office Dorm Camping Travel (Yellow)How long does the battery last on a full charge?A: Runtime varies by speed setting, but it typically runs for several hours of cordless cooling on a single charge.Can both fan heads be aimed in completely different directions?A: Yes, each head swivels independently 350 degrees, so you can point them at two separate spots at once.Is this fan quiet enough to use while sleeping?A: Absolutely, the brushless motor keeps noise low, so it won't disturb your sleep or study sessions.What kind of USB cable or adapter do I need to charge it?A: It charges with any standard USB cable, so you can plug it into a power bank, laptop, or wall adapter.How do I clean the fan blades if they get dusty?A: The outer shell detaches easily, letting you wipe the blades and grilles clean without any tools.Features:1. Dual 350° independently rotatable fan heads for multi-directional airflow.2. Quiet brushless motor delivers strong yet low-noise cooling performance.3. Built-in rechargeable battery supports cordless USB charging anywhere.4. Compact lightweight design with top carry handle for easy portability.5. Detachable grilles and anti-slip base for easy cleaning and stable placement.Specifications:Product Name: Dual 350° Rotatable Head Rechargeable Desk FanMaterial: ABS, PPColor: YellowPackage Includes:1 Piece Rechargeable Desk Fan‌【Independent 350° Dual Airflow Adjustment】This desk fan features upper and lower fan heads that swivel separately at 350 degrees to output two independent airflow streams at once, delivering comfortable cooling for shared workstations and paired resting spaces【Low-Noise Brushless Motor Wind Output】Built with premium brushless hardware, this oscillating fan drives steady strong airflow with reduced operating noise, while the curved 8-inch fan blade concentrates gentle widespread wind to keep ambient sound levels low【Wireless Rechargeable Portable Layout】This portable fan for travel houses an internal rechargeable battery for cordless extended runtime, and universal USB charging works with power banks, laptops and wall adapters for flexible power replenishment anywhere【Room Air Convection Cooling Effect】This usb fan boosts indoor air convection to regulate ambient temperature and refresh stagnant stale air, with a compact footprint that occupies minimal desktop surface area for study workstations and bedside stands【Safety Grille & Maintainable Structure】Dense outer grilles block unintended finger contact during regular use, while the detachable fan shell lets users wipe away accumulated dust without extra tools, and a weighted anti-slip base resists accidental tipping