Global shipments of wearable devices totaled a record 84.5M units in 3Q'19, a YoY increase of 94.6%; hearables alone accounted for almost half the shipments
Context & Ripple Effects
Through 2018 the wearables market looked like steady grind: IDC counted just 1.2% YoY growth in Q1 2018, then Xiaomi overtook Apple atop the shipment table in Q3 2018 on the strength of cheap bands. 3Q'19 breaks that pattern outright — 84.5M units, a 94.6% YoY jump, with hearables alone making up almost half the volume.
The composition shift matters more than the record itself. The quarter's growth engine is no longer the wrist, and the vendor order that Xiaomi's band volumes built is being reshuffled around ear-worn devices — a dynamic that shows up again when Apple posts a 29.3% share on 21.2M units in Q1 2020.
First-order effects
- Hearables become the category's volume center at ~half of 84.5M quarterly units, forcing every top-five vendor — Apple, Xiaomi, and the wrist-first incumbents behind them — to treat earbuds as a flagship line rather than an accessory.
- Xiaomi's Q3 2018 lead, built on low-cost bands, is directly exposed: the fastest-growing half of the market is one where its band franchise offers no product.
Second-order effects
- Component and audio supply chains reorient toward true-wireless earbud builds, and price competition in hearables compresses margins at the low end just as wrist-band demand flattens.
- Fitbit-style wrist-only vendors face a shrinking share of category growth, pressuring them to add hearables or cede the volume game to Apple and Xiaomi.
Third-order effects
- The market splits structurally: hearables drive unit volume while premium watches drive revenue — a split confirmed downstream, when 2020 closed at 444.7M units with Apple holding 36.2% share even as wrist-worn shipments slipped 1% across the first nine months of 2024.
- If the pattern holds, 'wearables' stops being one market: unit leadership (cheap hearables) and profit leadership (watches) diverge permanently, changing which vendor rankings IDC's headline numbers actually describe.
The trend: Wearables volume growth is migrating from the wrist to the ear, splitting the category between low-margin hearables that win unit share and premium watches that win revenue.