Ground AURA-1's 220/300 mAh and ≥ 16 h targets against shipping products
Figures marked (claimed) are manufacturer marketing numbers, not measured.
Figures marked (unverified) come from low-quality sources and should be
re-checked against a teardown before being used in any derivation.
26.65 g; 10 min charge → 20 h; the AURA-1 baseline (§0.1)
Sony WI-1000XM2
not published
10 h ANC on (claimed)
Premium ANC neckband; 10 min charge → 80 min
JBL Tune 125BT
not published
16 h, no ANC (claimed)
Budget class; 15 min charge → 1 h
OPPO Enco M32 / M33
~220 mAh class
~28 h (claimed)
Same India-market class as the Bullets Z2; specs sparsely documented
Realme Buds Wireless 3
not published
~40 h, ANC off (claimed)
Verify before use — versus.com lists battery as unknown
Takeaway: the neckband class clusters around 200–250 mAh and 20–30 h BT-only
playback, i.e. ~30–40 mW system draw. AURA-1's §D.1 derivation (29 mW ANC-off,
41 mW ANC-on) sits exactly in this cluster.
2. TWS earbuds (adjacent class — tighter budget than AURA-1)
Device
Battery
Playback
Notes
Apple AirPods Pro 2
earbud cell ~0.16 Wh class (teardown-reported)
6 h ANC (claimed) · 30 h with case
Apple AirPods Pro 3
Apple does not publish; per-bud "340 mAh" circulating online is (unverified) and implausible for a bud this size
8 h ANC (claimed) · 24 h with case
+33% per-charge vs Pro 2 with 2× ANC depth — the current efficiency benchmark
IYO One (standalone AI TWS)
not published
> 16 h companion mode (claimed) · "less" in phone-free/Wi-Fi/LTE mode
Closest product-concept comparable; phone-free runtime notably unquantified by vendor
Takeaway: an earbud runs ~5–10 mW-class system power off a ~50 mWh cell.
AirPods Pro 3 at 8 h ANC is the efficiency bar for audio subsystems. IYO's
refusal to quantify phone-free (radio-on) runtime is indirect evidence of how
hard the Wi-Fi/LTE idle-power problem is — exactly AURA-1's R-D.3.
3. AI wearables (the cautionary column)
Device
Battery
Runtime
Power implied
Ray-Ban Meta Gen 1
154 mAh ≈ 570 mWh
~4 h mixed use (claimed)
~140 mW average
Ray-Ban Meta Gen 2
not published (larger)
~8 h typical (claimed), 48 h case
on-device assistant features explicitly battery-limited
Humane AI Pin
650 mAh ≈ 2.4 Wh
~4 h (+5 h booster)
~600 mW average — thermal throttling was widely reported; product failed
Samsung Galaxy Watch6 (context)
425 mAh
~1–1.5 days
smartwatch class for scale
Takeaway: every failed or struggling AI wearable sits at 100–600 mW average
draw. Products that survive sit at 30–50 mW. AURA-1's all-features target
(48 mW = 814 mWh / 17 h) is deliberately on the surviving side of that line —
this table is the argument for why R-D.3 (4 mW Wi-Fi idle) is non-negotiable.
