Home / Accessories / Boya BY-WM4 Pro K4 Dual Wireless Lavalier to iOS Sale! Boya BY-WM4 Pro K4 Dual Wireless Lavalier to iOS₵ 4,424.37 ₵ 3,539.50 Wireless Lavalier Microphone for iPhone iPad iOS Devices YouTube Facebook Live Stream Broadcast Poadst Interview with 2 Transmitters & Lighnting Connector Receiver Boya BY-WM4 Pro K4 Dual Wireless Lavalier to iOS quantity Add to cart SKU: BYWM4PROK4 Category: Accessories Tags: boya, wireless microphone, wm4 pro k4 Product ID: 6138